20245272 has 16 divisors (see below), whose sum is σ = 50613240. Its totient is φ = 6748416.

The previous prime is 20245261. The next prime is 20245273. The reversal of 20245272 is 27254202.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 843553 = 20245272 / (2 + 0 + 2 + 4 + 5 + 2 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245273) 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, 421753 + ... + 421800.

Almost surely, 2^20245272 is an apocalyptic number.

It is an amenable number.

20245272 is an abundant number, since it is smaller than the sum of its proper divisors (30367968).

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

20245272 is a wasteful number, since it uses less digits than its factorization.

20245272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843562 (or 843558 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 20245272 is about 4499.4746359992. The cubic root of 20245272 is about 272.5468740732.

Adding to 20245272 its reverse (27254202), we get a palindrome (47499474).

The spelling of 20245272 in words is "twenty million, two hundred forty-five thousand, two hundred seventy-two".