20298906 has 24 divisors (see below), whose sum is σ = 44126784. Its totient is φ = 6743880.

The previous prime is 20298871. The next prime is 20298911. The reversal of 20298906 is 60989202.

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, 4255 + ... + 7661.

It is an arithmetic number, because the mean of its divisors is an integer number (1838616).

Almost surely, 2^20298906 is an apocalyptic number.

20298906 is an abundant number, since it is smaller than the sum of its proper divisors (23827878).

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

20298906 is a wasteful number, since it uses less digits than its factorization.

20298906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3746 (or 3743 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 20298906 is about 4505.4307230275. The cubic root of 20298906 is about 272.7873399210.

The spelling of 20298906 in words is "twenty million, two hundred ninety-eight thousand, nine hundred six".