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1309297296 = 243171984449
BaseRepresentation
bin100111000001010…
…0100101010010000
310101020200012020110
41032002210222100
510140140003141
6333530441320
744305562166
oct11602445220
93336605213
101309297296
1161207848a
12306593240
1317b341a38
14c5c61236
1579e29e16
hex4e0a4a90

1309297296 has 80 divisors (see below), whose sum is σ = 3769848000. Its totient is φ = 389136384.

The previous prime is 1309297291. The next prime is 1309297331. The reversal of 1309297296 is 6927929031.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1309297291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26721 + ... + 57728.

It is an arithmetic number, because the mean of its divisors is an integer number (47123100).

Almost surely, 21309297296 is an apocalyptic number.

1309297296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1309297296 is an abundant number, since it is smaller than the sum of its proper divisors (2460550704).

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

1309297296 is a wasteful number, since it uses less digits than its factorization.

1309297296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84496 (or 84490 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 1309297296 is about 36184.2133533396. The cubic root of 1309297296 is about 1093.9885006707.

The spelling of 1309297296 in words is "one billion, three hundred nine million, two hundred ninety-seven thousand, two hundred ninety-six".

Divisors: 1 2 3 4 6 8 12 16 17 19 24 34 38 48 51 57 68 76 102 114 136 152 204 228 272 304 323 408 456 646 816 912 969 1292 1938 2584 3876 5168 7752 15504 84449 168898 253347 337796 506694 675592 1013388 1351184 1435633 1604531 2026776 2871266 3209062 4053552 4306899 4813593 5742532 6418124 8613798 9627186 11485064 12836248 17227596 19254372 22970128 25672496 27277027 34455192 38508744 54554054 68910384 77017488 81831081 109108108 163662162 218216216 327324324 436432432 654648648 1309297296