256342232 has 16 divisors (see below), whose sum is σ = 480937200. Its totient is φ = 128092320.

The previous prime is 256342217. The next prime is 256342267. The reversal of 256342232 is 232243652.

It is a super-2 number, since 2×256342232² = 131422679813483648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256342195 and 256342204.

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, 5357 + ... + 23267.

It is an arithmetic number, because the mean of its divisors is an integer number (30058575).

Almost surely, 2^256342232 is an apocalyptic number.

It is an amenable number.

256342232 is a deficient number, since it is larger than the sum of its proper divisors (224594968).

256342232 is a wasteful number, since it uses less digits than its factorization.

256342232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19706 (or 19702 counting only the distinct ones).

The product of its digits is 17280, while the sum is 29.

The square root of 256342232 is about 16010.6911780847. The cubic root of 256342232 is about 635.2432424186.

Adding to 256342232 its reverse (232243652), we get a palindrome (488585884).

The spelling of 256342232 in words is "two hundred fifty-six million, three hundred forty-two thousand, two hundred thirty-two".