621952132 has 12 divisors (see below), whose sum is σ = 1123526656. Its totient is φ = 300944520.

The previous prime is 621952073. The next prime is 621952139. The reversal of 621952132 is 231259126.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 621952094 and 621952103.

It is not an unprimeable number, because it can be changed into a prime (621952139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2507748 + ... + 2507995.

Almost surely, 2^621952132 is an apocalyptic number.

621952132 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

621952132 is a deficient number, since it is larger than the sum of its proper divisors (501574524).

621952132 is a wasteful number, since it uses less digits than its factorization.

621952132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015778 (or 5015776 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 621952132 is about 24938.9681422468. The cubic root of 621952132 is about 853.5958997650.

The spelling of 621952132 in words is "six hundred twenty-one million, nine hundred fifty-two thousand, one hundred thirty-two".