20769832 has 8 divisors (see below), whose sum is σ = 38943450. Its totient is φ = 10384912.

The previous prime is 20769823. The next prime is 20769857. The reversal of 20769832 is 23896702.

It can be written as a sum of positive squares in only one way, i.e., 20484676 + 285156 = 4526^2 + 534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) 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 = 20769791 and 20769800.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1298107 + ... + 1298122.

Almost surely, 2^20769832 is an apocalyptic number.

It is an amenable number.

20769832 is a deficient number, since it is larger than the sum of its proper divisors (18173618).

20769832 is a wasteful number, since it uses less digits than its factorization.

20769832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596235 (or 2596231 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 20769832 is about 4557.3931144899. The cubic root of 20769832 is about 274.8807505006.

The spelling of 20769832 in words is "twenty million, seven hundred sixty-nine thousand, eight hundred thirty-two".