20272272 has 20 divisors (see below), whose sum is σ = 52370160. Its totient is φ = 6757408.

The previous prime is 20272267. The next prime is 20272277. The reversal of 20272272 is 27227202.

It is an interprime number because it is at equal distance from previous prime (20272267) and next prime (20272277).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20272277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211122 + ... + 211217.

It is an arithmetic number, because the mean of its divisors is an integer number (2618508).

Almost surely, 2^20272272 is an apocalyptic number.

It is an amenable number.

20272272 is an abundant number, since it is smaller than the sum of its proper divisors (32097888).

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

20272272 is a wasteful number, since it uses less digits than its factorization.

20272272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422350 (or 422344 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 20272272 is about 4502.4739865989. The cubic root of 20272272 is about 272.6679804842.

Adding to 20272272 its reverse (27227202), we get a palindrome (47499474).

The spelling of 20272272 in words is "twenty million, two hundred seventy-two thousand, two hundred seventy-two".