20492956 has 24 divisors (see below), whose sum is σ = 41425776. Its totient is φ = 8766720.

The previous prime is 20492951. The next prime is 20492957. The reversal of 20492956 is 65929402.

It is a super-2 number, since 2×20492956² = 839922491235872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20492951) 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, 12951 + ... + 14446.

It is an arithmetic number, because the mean of its divisors is an integer number (1726074).

Almost surely, 2^20492956 is an apocalyptic number.

It is an amenable number.

20492956 is an abundant number, since it is smaller than the sum of its proper divisors (20932820).

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

20492956 is a wasteful number, since it uses less digits than its factorization.

20492956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27429 (or 27427 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 20492956 is about 4526.9146225658. The cubic root of 20492956 is about 273.6538331825.

It can be divided in two parts, 2049 and 2956, that added together give a palindrome (5005).

The spelling of 20492956 in words is "twenty million, four hundred ninety-two thousand, nine hundred fifty-six".