256073420 has 12 divisors (see below), whose sum is σ = 537754224. Its totient is φ = 102429360.

The previous prime is 256073407. The next prime is 256073449. The reversal of 256073420 is 24370652.

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, 6401816 + ... + 6401855.

It is an arithmetic number, because the mean of its divisors is an integer number (44812852).

Almost surely, 2^256073420 is an apocalyptic number.

256073420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256073420 is an abundant number, since it is smaller than the sum of its proper divisors (281680804).

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

256073420 is a wasteful number, since it uses less digits than its factorization.

256073420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12803680 (or 12803678 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 256073420 is about 16002.2942105187. The cubic root of 256073420 is about 635.0211165400.

The spelling of 256073420 in words is "two hundred fifty-six million, seventy-three thousand, four hundred twenty".