20755632 has 40 divisors (see below), whose sum is σ = 53937520. Its totient is φ = 6877440.

The previous prime is 20755613. The next prime is 20755649. The reversal of 20755632 is 23655702.

It is a self number, because there is not a number n which added to its sum of digits gives 20755632.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7494 + ... + 9882.

It is an arithmetic number, because the mean of its divisors is an integer number (1348438).

Almost surely, 2^20755632 is an apocalyptic number.

It is an amenable number.

20755632 is an abundant number, since it is smaller than the sum of its proper divisors (33181888).

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

20755632 is a wasteful number, since it uses less digits than its factorization.

20755632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581 (or 2575 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 20755632 is about 4555.8349399424. The cubic root of 20755632 is about 274.8180923700.

The spelling of 20755632 in words is "twenty million, seven hundred fifty-five thousand, six hundred thirty-two".