256492398 has 8 divisors (see below), whose sum is σ = 512984808. Its totient is φ = 85497464.

The previous prime is 256492363. The next prime is 256492403. The reversal of 256492398 is 893294652.

It is a happy number.

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

256492398 is an admirable number.

It is a congruent number.

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, 21374361 + ... + 21374372.

It is an arithmetic number, because the mean of its divisors is an integer number (64123101).

Almost surely, 2^256492398 is an apocalyptic number.

256492398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256492398 is a wasteful number, since it uses less digits than its factorization.

256492398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42748738.

The product of its digits is 933120, while the sum is 48.

The square root of 256492398 is about 16015.3800454438. The cubic root of 256492398 is about 635.3672606306.

The spelling of 256492398 in words is "two hundred fifty-six million, four hundred ninety-two thousand, three hundred ninety-eight".