20532992 has 18 divisors (see below), whose sum is σ = 40986288. Its totient is φ = 10266368.

The previous prime is 20532971. The next prime is 20533001. The reversal of 20532992 is 29923502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39848 + ... + 40359.

It is an arithmetic number, because the mean of its divisors is an integer number (2277016).

Almost surely, 2^20532992 is an apocalyptic number.

It is an amenable number.

20532992 is a deficient number, since it is larger than the sum of its proper divisors (20453296).

20532992 is an frugal number, since it uses more digits than its factorization.

20532992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80223 (or 80209 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 20532992 is about 4531.3344612818. The cubic root of 20532992 is about 273.8319249111.

The spelling of 20532992 in words is "twenty million, five hundred thirty-two thousand, nine hundred ninety-two".