20875070 has 16 divisors (see below), whose sum is σ = 38871360. Its totient is φ = 8061984.

The previous prime is 20875069. The next prime is 20875093. The reversal of 20875070 is 7057802.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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, 35702 + ... + 36281.

It is an arithmetic number, because the mean of its divisors is an integer number (2429460).

Almost surely, 2^20875070 is an apocalyptic number.

20875070 is a deficient number, since it is larger than the sum of its proper divisors (17996290).

20875070 is a wasteful number, since it uses less digits than its factorization.

20875070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72019.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 20875070 is about 4568.9243810770. The cubic root of 20875070 is about 275.3442300887.

The spelling of 20875070 in words is "twenty million, eight hundred seventy-five thousand, seventy".