20533732 has 12 divisors (see below), whose sum is σ = 36426796. Its totient is φ = 10126080.

The previous prime is 20533729. The next prime is 20533753. The reversal of 20533732 is 23733502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16597476 + 3936256 = 4074^2 + 1984^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20533697 and 20533706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34869 + ... + 35452.

Almost surely, 2^20533732 is an apocalyptic number.

It is an amenable number.

20533732 is a deficient number, since it is larger than the sum of its proper divisors (15893064).

20533732 is a wasteful number, since it uses less digits than its factorization.

20533732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70398 (or 70396 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 25.

The square root of 20533732 is about 4531.4161141965. The cubic root of 20533732 is about 273.8352144656.

The spelling of 20533732 in words is "twenty million, five hundred thirty-three thousand, seven hundred thirty-two".