20869370 has 16 divisors (see below), whose sum is σ = 39774888. Its totient is φ = 7856640.

The previous prime is 20869339. The next prime is 20869393. The reversal of 20869370 is 7396802.

It can be written as a sum of positive squares in 4 ways, for example, as 16654561 + 4214809 = 4081^2 + 2053^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20869370.

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, 61211 + ... + 61550.

Almost surely, 2^20869370 is an apocalyptic number.

20869370 is a deficient number, since it is larger than the sum of its proper divisors (18905518).

20869370 is a wasteful number, since it uses less digits than its factorization.

20869370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122785.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20869370 is about 4568.3005592890. The cubic root of 20869370 is about 275.3191666201.

The spelling of 20869370 in words is "twenty million, eight hundred sixty-nine thousand, three hundred seventy".