2600987904 has 54 divisors (see below), whose sum is σ = 7499295986. Its totient is φ = 866995200.

The previous prime is 2600987869. The next prime is 2600987941. The reversal of 2600987904 is 4097890062.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2564409600 + 36578304 = 50640^2 + 6048^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2600987904.

It is a congruent number.

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, 562147 + ... + 566754.

Almost surely, 2^2600987904 is an apocalyptic number.

2600987904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2600987904 is an abundant number, since it is smaller than the sum of its proper divisors (4898308082).

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

2600987904 is a wasteful number, since it uses less digits than its factorization.

2600987904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128923 (or 1128906 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 2600987904 is about 50999.8814116268. The cubic root of 2600987904 is about 1375.2430034868.

The spelling of 2600987904 in words is "two billion, six hundred million, nine hundred eighty-seven thousand, nine hundred four".