20969270 has 32 divisors (see below), whose sum is σ = 43296768. Its totient is φ = 7162848.

The previous prime is 20969239. The next prime is 20969281. The reversal of 20969270 is 7296902.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 20969270.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32087 + ... + 32733.

It is an arithmetic number, because the mean of its divisors is an integer number (1353024).

Almost surely, 2^20969270 is an apocalyptic number.

20969270 is an abundant number, since it is smaller than the sum of its proper divisors (22327498).

20969270 is a wasteful number, since it uses less digits than its factorization.

20969270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 20969270 is about 4579.2215495649. The cubic root of 20969270 is about 275.7577777520.

The spelling of 20969270 in words is "twenty million, nine hundred sixty-nine thousand, two hundred seventy".