331629028 has 6 divisors (see below), whose sum is σ = 580350806. Its totient is φ = 165814512.

The previous prime is 331628977. The next prime is 331629037. The reversal of 331629028 is 820926133.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 297148644 + 34480384 = 17238^2 + 5872^2 .

It is a junction number, because it is equal to n+sod(n) for n = 331628984 and 331629002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41453625 + ... + 41453632.

Almost surely, 2^331629028 is an apocalyptic number.

It is an amenable number.

331629028 is a deficient number, since it is larger than the sum of its proper divisors (248721778).

331629028 is a wasteful number, since it uses less digits than its factorization.

331629028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82907261 (or 82907259 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 331629028 is about 18210.6844462255. The cubic root of 331629028 is about 692.1775553161.

The spelling of 331629028 in words is "three hundred thirty-one million, six hundred twenty-nine thousand, twenty-eight".