260505156 has 12 divisors (see below), whose sum is σ = 607845392. Its totient is φ = 86835048.

The previous prime is 260505151. The next prime is 260505169. The reversal of 260505156 is 651505062.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (260505151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10854370 + ... + 10854393.

Almost surely, 2^260505156 is an apocalyptic number.

It is an amenable number.

260505156 is an abundant number, since it is smaller than the sum of its proper divisors (347340236).

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

260505156 is a wasteful number, since it uses less digits than its factorization.

260505156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21708770 (or 21708768 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 260505156 is about 16140.1721180414. The cubic root of 260505156 is about 638.6635163617.

The spelling of 260505156 in words is "two hundred sixty million, five hundred five thousand, one hundred fifty-six".