261469356 has 48 divisors (see below), whose sum is σ = 629059200. Its totient is φ = 84488832.

The previous prime is 261469349. The next prime is 261469379. The reversal of 261469356 is 653964162.

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, 49155 + ... + 54213.

It is an arithmetic number, because the mean of its divisors is an integer number (13105400).

Almost surely, 2^261469356 is an apocalyptic number.

It is an amenable number.

261469356 is an abundant number, since it is smaller than the sum of its proper divisors (367589844).

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

261469356 is a wasteful number, since it uses less digits than its factorization.

261469356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5198 (or 5196 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 261469356 is about 16170.0141001794. The cubic root of 261469356 is about 639.4505016479.

The spelling of 261469356 in words is "two hundred sixty-one million, four hundred sixty-nine thousand, three hundred fifty-six".