20752636 has 12 divisors (see below), whose sum is σ = 38228680. Its totient is φ = 9830160.

The previous prime is 20752621. The next prime is 20752639. The reversal of 20752636 is 63625702.

It is a hoax number, since the sum of its digits (31) 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 = 20752598 and 20752607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136455 + ... + 136606.

Almost surely, 2^20752636 is an apocalyptic number.

It is an amenable number.

20752636 is a deficient number, since it is larger than the sum of its proper divisors (17476044).

20752636 is a wasteful number, since it uses less digits than its factorization.

20752636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273084 (or 273082 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 20752636 is about 4555.5061189730. The cubic root of 20752636 is about 274.8048687363.

The spelling of 20752636 in words is "twenty million, seven hundred fifty-two thousand, six hundred thirty-six".