20497932 has 72 divisors (see below), whose sum is σ = 63781536. Its totient is φ = 5405184.

The previous prime is 20497921. The next prime is 20497993. The reversal of 20497932 is 23979402.

It is a hoax number, since the sum of its digits (36) 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 (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148 + ... + 6404.

Almost surely, 2^20497932 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20497932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31890768).

20497932 is an abundant number, since it is smaller than the sum of its proper divisors (43283604).

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

20497932 is a wasteful number, since it uses less digits than its factorization.

20497932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287 (or 6282 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 20497932 is about 4527.4641909131. The cubic root of 20497932 is about 273.6759804880.

The spelling of 20497932 in words is "twenty million, four hundred ninety-seven thousand, nine hundred thirty-two".