312644028 has 48 divisors (see below), whose sum is σ = 738934784. Its totient is φ = 102876480.

The previous prime is 312644023. The next prime is 312644053. The reversal of 312644028 is 820446213.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 312643986 and 312644004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312644023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412626 + ... + 413382.

Almost surely, 2^312644028 is an apocalyptic number.

It is an amenable number.

312644028 is an abundant number, since it is smaller than the sum of its proper divisors (426290756).

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

312644028 is a wasteful number, since it uses less digits than its factorization.

312644028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 312644028 is about 17681.7427874064. The cubic root of 312644028 is about 678.7086420404.

The spelling of 312644028 in words is "three hundred twelve million, six hundred forty-four thousand, twenty-eight".