20210870408 has 32 divisors (see below), whose sum is σ = 39693456000. Its totient is φ = 9629292288.

The previous prime is 20210870377. The next prime is 20210870467. The reversal of 20210870408 is 80407801202.

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, 160433 + ... + 257216.

It is an arithmetic number, because the mean of its divisors is an integer number (1240420500).

Almost surely, 2^20210870408 is an apocalyptic number.

It is an amenable number.

20210870408 is a deficient number, since it is larger than the sum of its proper divisors (19482585592).

20210870408 is a wasteful number, since it uses less digits than its factorization.

20210870408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417941 (or 417937 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The spelling of 20210870408 in words is "twenty billion, two hundred ten million, eight hundred seventy thousand, four hundred eight".