20456116 has 24 divisors (see below), whose sum is σ = 37202760. Its totient is φ = 9833472.

The previous prime is 20456113. The next prime is 20456123. The reversal of 20456116 is 61165402.

It can be written as a sum of positive squares in 4 ways, for example, as 1008016 + 19448100 = 1004^2 + 4410^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20456113) 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, 12396 + ... + 13948.

It is an arithmetic number, because the mean of its divisors is an integer number (1550115).

Almost surely, 2^20456116 is an apocalyptic number.

It is an amenable number.

20456116 is a deficient number, since it is larger than the sum of its proper divisors (16746644).

20456116 is a wasteful number, since it uses less digits than its factorization.

20456116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 20456116 is about 4522.8437956666. The cubic root of 20456116 is about 273.4897531552.

The spelling of 20456116 in words is "twenty million, four hundred fifty-six thousand, one hundred sixteen".