260915904 has 168 divisors, whose sum is σ = 817311040. Its totient is φ = 82301184.

The previous prime is 260915903. The next prime is 260915911. The reversal of 260915904 is 409519062.

260915904 is a `hidden beast` number, since 2 + 60 + 9 + 1 + 590 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (260915903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295047 + ... + 295929.

Almost surely, 2^260915904 is an apocalyptic number.

260915904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260915904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408655520).

260915904 is an abundant number, since it is smaller than the sum of its proper divisors (556395136).

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

260915904 is an equidigital number, since it uses as much as digits as its factorization.

260915904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 260915904 is about 16152.8915058574. The cubic root of 260915904 is about 638.9990081318. Note that the first 3 decimals are identical.

The spelling of 260915904 in words is "two hundred sixty million, nine hundred fifteen thousand, nine hundred four".