20570898 has 16 divisors (see below), whose sum is σ = 41196960. Its totient is φ = 6847776.

The previous prime is 20570861. The next prime is 20570903. The reversal of 20570898 is 89807502.

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, 3793 + ... + 7451.

It is an arithmetic number, because the mean of its divisors is an integer number (2574810).

Almost surely, 2^20570898 is an apocalyptic number.

20570898 is an abundant number, since it is smaller than the sum of its proper divisors (20626062).

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

20570898 is a wasteful number, since it uses less digits than its factorization.

20570898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4601.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 20570898 is about 4535.5151857314. The cubic root of 20570898 is about 274.0003285556. Note that the first 3 decimals are identical.

The spelling of 20570898 in words is "twenty million, five hundred seventy thousand, eight hundred ninety-eight".