20272236 has 12 divisors (see below), whose sum is σ = 47301912. Its totient is φ = 6757408.

The previous prime is 20272229. The next prime is 20272243. The reversal of 20272236 is 63227202.

It is an interprime number because it is at equal distance from previous prime (20272229) and next prime (20272243).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844665 + ... + 844688.

It is an arithmetic number, because the mean of its divisors is an integer number (3941826).

Almost surely, 2^20272236 is an apocalyptic number.

It is an amenable number.

20272236 is an abundant number, since it is smaller than the sum of its proper divisors (27029676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20272236 is a wasteful number, since it uses less digits than its factorization.

20272236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689360 (or 1689358 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20272236 is about 4502.4699887950. The cubic root of 20272236 is about 272.6678190806.

Adding to 20272236 its reverse (63227202), we get a palindrome (83499438).

The spelling of 20272236 in words is "twenty million, two hundred seventy-two thousand, two hundred thirty-six".