20485976 has 32 divisors (see below), whose sum is σ = 44064000. Its totient is φ = 8746656.

The previous prime is 20485973. The next prime is 20485991. The reversal of 20485976 is 67958402.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20485973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19595 + ... + 20613.

It is an arithmetic number, because the mean of its divisors is an integer number (1377000).

Almost surely, 2^20485976 is an apocalyptic number.

It is an amenable number.

20485976 is an abundant number, since it is smaller than the sum of its proper divisors (23578024).

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

20485976 is a wasteful number, since it uses less digits than its factorization.

20485976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 20485976 is about 4526.1436123923. The cubic root of 20485976 is about 273.6227603810.

The spelling of 20485976 in words is "twenty million, four hundred eighty-five thousand, nine hundred seventy-six".