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1151213130 = 232512791257
BaseRepresentation
bin100010010011110…
…0001111001001010
32222020012200112100
41010213201321022
54324202310010
6310122254230
740346102334
oct10447417112
92866180470
101151213130
11540914511
12281657376
13154672302
14acc70454
156b1002c0
hex449e1e4a

1151213130 has 24 divisors (see below), whose sum is σ = 2993154372. Its totient is φ = 306990144.

The previous prime is 1151213113. The next prime is 1151213143. The reversal of 1151213130 is 313121511.

1151213130 is a `hidden beast` number, since 11 + 512 + 13 + 130 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1047234321 + 103978809 = 32361^2 + 10197^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6395539 + ... + 6395718.

Almost surely, 21151213130 is an apocalyptic number.

1151213130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1151213130 is an abundant number, since it is smaller than the sum of its proper divisors (1841941242).

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

1151213130 is a wasteful number, since it uses less digits than its factorization.

1151213130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12791270 (or 12791267 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1151213130 is about 33929.5318270088. The cubic root of 1151213130 is about 1048.0578247574.

Adding to 1151213130 its reverse (313121511), we get a palindrome (1464334641).

It can be divided in two parts, 11512 and 13130, that added together give a palindrome (24642).

The spelling of 1151213130 in words is "one billion, one hundred fifty-one million, two hundred thirteen thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 12791257 25582514 38373771 63956285 76747542 115121313 127912570 191868855 230242626 383737710 575606565 1151213130