261200904 has 64 divisors (see below), whose sum is σ = 691200000. Its totient is φ = 82025280.

The previous prime is 261200899. The next prime is 261200957. The reversal of 261200904 is 409002162.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85597 + ... + 88595.

It is an arithmetic number, because the mean of its divisors is an integer number (10800000).

Almost surely, 2^261200904 is an apocalyptic number.

261200904 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 261200904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345600000).

261200904 is an abundant number, since it is smaller than the sum of its proper divisors (429999096).

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

261200904 is a wasteful number, since it uses less digits than its factorization.

261200904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218 (or 3214 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 261200904 is about 16161.7110480295. The cubic root of 261200904 is about 639.2315842817.

The spelling of 261200904 in words is "two hundred sixty-one million, two hundred thousand, nine hundred four".