20329372 has 24 divisors (see below), whose sum is σ = 41037920. Its totient is φ = 8631360.

The previous prime is 20329363. The next prime is 20329417. The reversal of 20329372 is 27392302.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20329372.

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 7 ways as a sum of consecutive naturals, for example, 279 + ... + 6382.

Almost surely, 2^20329372 is an apocalyptic number.

It is an amenable number.

20329372 is an abundant number, since it is smaller than the sum of its proper divisors (20708548).

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

20329372 is a wasteful number, since it uses less digits than its factorization.

20329372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781 (or 6779 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 20329372 is about 4508.8104861482. The cubic root of 20329372 is about 272.9237443949.

The spelling of 20329372 in words is "twenty million, three hundred twenty-nine thousand, three hundred seventy-two".