20764270 has 24 divisors (see below), whose sum is σ = 38299176. Its totient is φ = 8105328.

The previous prime is 20764243. The next prime is 20764297. The reversal of 20764270 is 7246702.

It is an interprime number because it is at equal distance from previous prime (20764243) and next prime (20764297).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17929 + ... + 19051.

It is an arithmetic number, because the mean of its divisors is an integer number (1595799).

Almost surely, 2^20764270 is an apocalyptic number.

20764270 is a deficient number, since it is larger than the sum of its proper divisors (17534906).

20764270 is a wasteful number, since it uses less digits than its factorization.

20764270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20764270 is about 4556.7828563582. The cubic root of 20764270 is about 274.8562113320.

The spelling of 20764270 in words is "twenty million, seven hundred sixty-four thousand, two hundred seventy".