20764132 has 6 divisors (see below), whose sum is σ = 36337238. Its totient is φ = 10382064.

The previous prime is 20764127. The next prime is 20764153. The reversal of 20764132 is 23146702.

It can be written as a sum of positive squares in only one way, i.e., 10929636 + 9834496 = 3306^2 + 3136^2 .

It is a super-2 number, since 2×20764132² = 862298355426848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20764097 and 20764106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2595513 + ... + 2595520.

Almost surely, 2^20764132 is an apocalyptic number.

It is an amenable number.

20764132 is a deficient number, since it is larger than the sum of its proper divisors (15573106).

20764132 is a wasteful number, since it uses less digits than its factorization.

20764132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5191037 (or 5191035 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20764132 is about 4556.7677140710. The cubic root of 20764132 is about 274.8556024296.

The spelling of 20764132 in words is "twenty million, seven hundred sixty-four thousand, one hundred thirty-two".