261592896 has 28 divisors (see below), whose sum is σ = 692131712. Its totient is φ = 87197568.

The previous prime is 261592873. The next prime is 261592921. The reversal of 261592896 is 698295162.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681040 + ... + 681423.

Almost surely, 2^261592896 is an apocalyptic number.

It is an amenable number.

261592896 is an abundant number, since it is smaller than the sum of its proper divisors (430538816).

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

261592896 is a wasteful number, since it uses less digits than its factorization.

261592896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362478 (or 1362468 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 261592896 is about 16173.8336828348. The cubic root of 261592896 is about 639.5511957633.

The spelling of 261592896 in words is "two hundred sixty-one million, five hundred ninety-two thousand, eight hundred ninety-six".