256031738 has 8 divisors (see below), whose sum is σ = 384153600. Its totient is φ = 127980540.

The previous prime is 256031719. The next prime is 256031767. The reversal of 256031738 is 837130652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 256031698 and 256031707.

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, 7418 + ... + 23813.

It is an arithmetic number, because the mean of its divisors is an integer number (48019200).

Almost surely, 2^256031738 is an apocalyptic number.

256031738 is a deficient number, since it is larger than the sum of its proper divisors (128121862).

256031738 is a wasteful number, since it uses less digits than its factorization.

256031738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35332.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 256031738 is about 16000.9917817615. The cubic root of 256031738 is about 634.9866597731.

The spelling of 256031738 in words is "two hundred fifty-six million, thirty-one thousand, seven hundred thirty-eight".