256333132 has 12 divisors (see below), whose sum is σ = 489363336. Its totient is φ = 116515040.

The previous prime is 256333109. The next prime is 256333153. The reversal of 256333132 is 231333652.

It is a self number, because there is not a number n which added to its sum of digits gives 256333132.

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, 2912833 + ... + 2912920.

It is an arithmetic number, because the mean of its divisors is an integer number (40780278).

Almost surely, 2^256333132 is an apocalyptic number.

256333132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256333132 is a deficient number, since it is larger than the sum of its proper divisors (233030204).

256333132 is a wasteful number, since it uses less digits than its factorization.

256333132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5825768 (or 5825766 counting only the distinct ones).

The product of its digits is 9720, while the sum is 28.

The square root of 256333132 is about 16010.4069904547. The cubic root of 256333132 is about 635.2357254079.

Adding to 256333132 its reverse (231333652), we get a palindrome (487666784).

The spelling of 256333132 in words is "two hundred fifty-six million, three hundred thirty-three thousand, one hundred thirty-two".