20755732 has 6 divisors (see below), whose sum is σ = 36322538. Its totient is φ = 10377864.

The previous prime is 20755711. The next prime is 20755741. The reversal of 20755732 is 23755702.

It can be written as a sum of positive squares in only one way, i.e., 10732176 + 10023556 = 3276^2 + 3166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20755694 and 20755703.

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, 2594463 + ... + 2594470.

Almost surely, 2^20755732 is an apocalyptic number.

It is an amenable number.

20755732 is a deficient number, since it is larger than the sum of its proper divisors (15566806).

20755732 is a wasteful number, since it uses less digits than its factorization.

20755732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5188937 (or 5188935 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 20755732 is about 4555.8459148659. The cubic root of 20755732 is about 274.8185337244.

The spelling of 20755732 in words is "twenty million, seven hundred fifty-five thousand, seven hundred thirty-two".