261712072 has 16 divisors (see below), whose sum is σ = 490921200. Its totient is φ = 130799760.

The previous prime is 261712067. The next prime is 261712103. The reversal of 261712072 is 270217162.

261712072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 261712072.

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, 17947 + ... + 29077.

It is an arithmetic number, because the mean of its divisors is an integer number (30682575).

Almost surely, 2^261712072 is an apocalyptic number.

It is an amenable number.

261712072 is a deficient number, since it is larger than the sum of its proper divisors (229209128).

261712072 is a wasteful number, since it uses less digits than its factorization.

261712072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14076 (or 14072 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 261712072 is about 16177.5174856960. The cubic root of 261712072 is about 639.6483028622.

The spelling of 261712072 in words is "two hundred sixty-one million, seven hundred twelve thousand, seventy-two".