256532620 has 12 divisors (see below), whose sum is σ = 538718544. Its totient is φ = 102613040.

The previous prime is 256532611. The next prime is 256532641. The reversal of 256532620 is 26235652.

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, 6413296 + ... + 6413335.

It is an arithmetic number, because the mean of its divisors is an integer number (44893212).

Almost surely, 2^256532620 is an apocalyptic number.

256532620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256532620 is an abundant number, since it is smaller than the sum of its proper divisors (282185924).

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

256532620 is a wasteful number, since it uses less digits than its factorization.

256532620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12826640 (or 12826638 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 256532620 is about 16016.6357266437. The cubic root of 256532620 is about 635.4004707198.

The spelling of 256532620 in words is "two hundred fifty-six million, five hundred thirty-two thousand, six hundred twenty".