256033560 has 32 divisors (see below), whose sum is σ = 768101040. Its totient is φ = 68275584.

The previous prime is 256033553. The next prime is 256033573. The reversal of 256033560 is 65330652.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1066687 + ... + 1066926.

Almost surely, 2^256033560 is an apocalyptic number.

256033560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256033560 is an abundant number, since it is smaller than the sum of its proper divisors (512067480).

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

256033560 is a wasteful number, since it uses less digits than its factorization.

256033560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133627 (or 2133623 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 256033560 is about 16001.0487156311. The cubic root of 256033560 is about 634.9881660225.

The spelling of 256033560 in words is "two hundred fifty-six million, thirty-three thousand, five hundred sixty".