256045620 has 24 divisors (see below), whose sum is σ = 716927904. Its totient is φ = 68278816.

The previous prime is 256045571. The next prime is 256045627. The reversal of 256045620 is 26540652.

256045620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256045627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2133654 + ... + 2133773.

It is an arithmetic number, because the mean of its divisors is an integer number (29871996).

Almost surely, 2^256045620 is an apocalyptic number.

256045620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256045620 is an abundant number, since it is smaller than the sum of its proper divisors (460882284).

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

256045620 is a wasteful number, since it uses less digits than its factorization.

256045620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267439 (or 4267437 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 256045620 is about 16001.4255614930. The cubic root of 256045620 is about 634.9981358575.

The spelling of 256045620 in words is "two hundred fifty-six million, forty-five thousand, six hundred twenty".