256494750 has 32 divisors (see below), whose sum is σ = 640212768. Its totient is φ = 68398400.

The previous prime is 256494743. The next prime is 256494761. The reversal of 256494750 is 57494652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170247 + ... + 171746.

It is an arithmetic number, because the mean of its divisors is an integer number (20006649).

Almost surely, 2^256494750 is an apocalyptic number.

256494750 is an abundant number, since it is smaller than the sum of its proper divisors (383718018).

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

256494750 is a wasteful number, since it uses less digits than its factorization.

256494750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342013 (or 342003 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 256494750 is about 16015.4534746912. The cubic root of 256494750 is about 635.3692027015.

The spelling of 256494750 in words is "two hundred fifty-six million, four hundred ninety-four thousand, seven hundred fifty".