20727936 has 96 divisors (see below), whose sum is σ = 62852400. Its totient is φ = 6538752.

The previous prime is 20727911. The next prime is 20727979. The reversal of 20727936 is 63972702.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20727936.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21415 + ... + 22361.

Almost surely, 2^20727936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20727936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31426200).

20727936 is an abundant number, since it is smaller than the sum of its proper divisors (42124464).

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

20727936 is a wasteful number, since it uses less digits than its factorization.

20727936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 971 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 20727936 is about 4552.7943067967. The cubic root of 20727936 is about 274.6958002633.

The spelling of 20727936 in words is "twenty million, seven hundred twenty-seven thousand, nine hundred thirty-six".