20468658 has 16 divisors (see below), whose sum is σ = 46785600. Its totient is φ = 5848176.

The previous prime is 20468627. The next prime is 20468671. The reversal of 20468658 is 85686402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243633 + ... + 243716.

It is an arithmetic number, because the mean of its divisors is an integer number (2924100).

Almost surely, 2^20468658 is an apocalyptic number.

20468658 is an abundant number, since it is smaller than the sum of its proper divisors (26316942).

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

20468658 is a wasteful number, since it uses less digits than its factorization.

20468658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487361.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 20468658 is about 4524.2301002491. The cubic root of 20468658 is about 273.5456355084.

The spelling of 20468658 in words is "twenty million, four hundred sixty-eight thousand, six hundred fifty-eight".