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1915230464 = 2872152681
BaseRepresentation
bin111001000101000…
…0001100100000000
311221110211210021122
41302022001210000
512410244333324
6514014011412
765314122200
oct16212014400
94843753248
101915230464
118a3108aa4
124554a6b68
13246a37084
14142510400
15b321aa5e
hex72281900

1915230464 has 54 divisors (see below), whose sum is σ = 4447168614. Its totient is φ = 820807680.

The previous prime is 1915230433. The next prime is 1915230511. The reversal of 1915230464 is 4640325191.

It can be written as a sum of positive squares in only one way, i.e., 1811353600 + 103876864 = 42560^2 + 10192^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63797 + ... + 88884.

Almost surely, 21915230464 is an apocalyptic number.

1915230464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1915230464 is an abundant number, since it is smaller than the sum of its proper divisors (2531938150).

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

1915230464 is an equidigital number, since it uses as much as digits as its factorization.

1915230464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152711 (or 152690 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1915230464 is about 43763.3461243539. The cubic root of 1915230464 is about 1241.8629783588.

The spelling of 1915230464 in words is "one billion, nine hundred fifteen million, two hundred thirty thousand, four hundred sixty-four".

Divisors: 1 2 4 7 8 14 16 28 32 49 56 64 98 112 128 196 224 256 392 448 784 896 1568 1792 3136 6272 12544 152681 305362 610724 1068767 1221448 2137534 2442896 4275068 4885792 7481369 8550136 9771584 14962738 17100272 19543168 29925476 34200544 39086336 59850952 68401088 119701904 136802176 239403808 273604352 478807616 957615232 1915230464