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13076379904 = 287210212
BaseRepresentation
bin11000010110110100…
…11011100100000000
31020202022111220222211
430023122123210000
5203240023124104
610001320111504
7642021252400
oct141332334400
936668456884
1013076379904
115600303845
12264b305594
131305165403
148c096c800
15517edce04
hex30b69b900

13076379904 has 81 divisors (see below), whose sum is σ = 30392946801. Its totient is φ = 5598673920.

The previous prime is 13076379871. The next prime is 13076379931. The reversal of 13076379904 is 40997367031.

It is a happy number.

The square root of 13076379904 is 114352.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7612213504 + 5464166400 = 87248^2 + 73920^2 .

It is a super-2 number, since 2×130763799042 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12806914 + ... + 12807934.

Almost surely, 213076379904 is an apocalyptic number.

13076379904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13076379904 is the 114352-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13076379904

13076379904 is an abundant number, since it is smaller than the sum of its proper divisors (17316566897).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13076379904 is an frugal number, since it uses more digits than its factorization.

13076379904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 49.

Multiplying 13076379904 by its sum of digits (49), we get a square (640742615296 = 8004642).

13076379904 divided by its sum of digits (49) gives a square (266864896 = 163362).

The spelling of 13076379904 in words is "thirteen billion, seventy-six million, three hundred seventy-nine thousand, nine hundred four".

Divisors: 1 2 4 7 8 14 16 28 32 49 56 64 98 112 128 196 224 256 392 448 784 896 1021 1568 1792 2042 3136 4084 6272 7147 8168 12544 14294 16336 28588 32672 50029 57176 65344 100058 114352 130688 200116 228704 261376 400232 457408 800464 914816 1042441 1600928 1829632 2084882 3201856 4169764 6403712 7297087 8339528 12807424 14594174 16679056 29188348 33358112 51079609 58376696 66716224 102159218 116753392 133432448 204318436 233506784 266864896 408636872 467013568 817273744 934027136 1634547488 1868054272 3269094976 6538189952 13076379904