20270872 has 24 divisors (see below), whose sum is σ = 40119300. Its totient is φ = 9600624.

The previous prime is 20270867. The next prime is 20270879. The reversal of 20270872 is 27807202.

It is a self number, because there is not a number n which added to its sum of digits gives 20270872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20270879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622 + ... + 6397.

Almost surely, 2^20270872 is an apocalyptic number.

It is an amenable number.

20270872 is a deficient number, since it is larger than the sum of its proper divisors (19848428).

20270872 is a wasteful number, since it uses less digits than its factorization.

20270872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7063 (or 7040 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 20270872 is about 4502.3185138326. The cubic root of 20270872 is about 272.6617035368.

The spelling of 20270872 in words is "twenty million, two hundred seventy thousand, eight hundred seventy-two".