31796628 has 24 divisors (see below), whose sum is σ = 75772032. Its totient is φ = 10373184.

The previous prime is 31796627. The next prime is 31796641. The reversal of 31796628 is 82669713.

It is a happy number.

It is a super-2 number, since 2×31796628² = 2022051104340768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31796628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31796623) 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 7 ways as a sum of consecutive naturals, for example, 27625 + ... + 28752.

It is an arithmetic number, because the mean of its divisors is an integer number (3157168).

Almost surely, 2^31796628 is an apocalyptic number.

It is an amenable number.

31796628 is an abundant number, since it is smaller than the sum of its proper divisors (43975404).

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

31796628 is a wasteful number, since it uses less digits than its factorization.

31796628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56431 (or 56429 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 31796628 is about 5638.8498827332. The cubic root of 31796628 is about 316.8062119356.

The spelling of 31796628 in words is "thirty-one million, seven hundred ninety-six thousand, six hundred twenty-eight".