621320382 has 24 divisors (see below), whose sum is σ = 1396054296. Its totient is φ = 207106632.

The previous prime is 621320377. The next prime is 621320393. The reversal of 621320382 is 283023126.

621320382 is a `hidden beast` number, since 621 + 3 + 2 + 0 + 38 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 638733 + ... + 639704.

It is an arithmetic number, because the mean of its divisors is an integer number (58168929).

Almost surely, 2^621320382 is an apocalyptic number.

621320382 is an abundant number, since it is smaller than the sum of its proper divisors (774733914).

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

621320382 is a wasteful number, since it uses less digits than its factorization.

621320382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278454 (or 1278442 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 621320382 is about 24926.2990032616. The cubic root of 621320382 is about 853.3067875382.

The spelling of 621320382 in words is "six hundred twenty-one million, three hundred twenty thousand, three hundred eighty-two".