20873070 has 24 divisors (see below), whose sum is σ = 54270216. Its totient is φ = 5566128.

The previous prime is 20873063. The next prime is 20873071. The reversal of 20873070 is 7037802.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20873071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115872 + ... + 116051.

It is an arithmetic number, because the mean of its divisors is an integer number (2261259).

Almost surely, 2^20873070 is an apocalyptic number.

20873070 is an abundant number, since it is smaller than the sum of its proper divisors (33397146).

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

20873070 is a wasteful number, since it uses less digits than its factorization.

20873070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231936 (or 231933 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 20873070 is about 4568.7055059393. The cubic root of 20873070 is about 275.3354364088.

The spelling of 20873070 in words is "twenty million, eight hundred seventy-three thousand, seventy".