20973432 has 32 divisors (see below), whose sum is σ = 52819200. Its totient is φ = 6939744.

The previous prime is 20973431. The next prime is 20973443. The reversal of 20973432 is 23437902.

It is a self number, because there is not a number n which added to its sum of digits gives 20973432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20973431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193 + ... + 6479.

It is an arithmetic number, because the mean of its divisors is an integer number (1650600).

Almost surely, 2^20973432 is an apocalyptic number.

It is an amenable number.

20973432 is an abundant number, since it is smaller than the sum of its proper divisors (31845768).

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

20973432 is a wasteful number, since it uses less digits than its factorization.

20973432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6435 (or 6431 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 20973432 is about 4579.6759710704. The cubic root of 20973432 is about 275.7760207642.

The spelling of 20973432 in words is "twenty million, nine hundred seventy-three thousand, four hundred thirty-two".