261258804 has 24 divisors (see below), whose sum is σ = 677337920. Its totient is φ = 87086232.

The previous prime is 261258769. The next prime is 261258827. The reversal of 261258804 is 408852162.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1209424 + ... + 1209639.

Almost surely, 2^261258804 is an apocalyptic number.

It is an amenable number.

261258804 is an abundant number, since it is smaller than the sum of its proper divisors (416079116).

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

261258804 is a wasteful number, since it uses less digits than its factorization.

261258804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419076 (or 2419068 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 261258804 is about 16163.5022195068. The cubic root of 261258804 is about 639.2788132840.

It can be divided in two parts, 2612 and 58804, that added together give a palindrome (61416).

The spelling of 261258804 in words is "two hundred sixty-one million, two hundred fifty-eight thousand, eight hundred four".