256053630 has 32 divisors (see below), whose sum is σ = 702319104. Its totient is φ = 58526496.

The previous prime is 256053613. The next prime is 256053631. The reversal of 256053630 is 36350652.

It is a super-2 number, since 2×256053630² = 131126922872353800, which contains 22 as substring.

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 (256053631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609442 + ... + 609861.

It is an arithmetic number, because the mean of its divisors is an integer number (21947472).

Almost surely, 2^256053630 is an apocalyptic number.

256053630 is an abundant number, since it is smaller than the sum of its proper divisors (446265474).

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

256053630 is a wasteful number, since it uses less digits than its factorization.

256053630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219320.

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

The square root of 256053630 is about 16001.6758497352. The cubic root of 256053630 is about 635.0047574405.

The spelling of 256053630 in words is "two hundred fifty-six million, fifty-three thousand, six hundred thirty".