20226672 has 50 divisors (see below), whose sum is σ = 58545608. Its totient is φ = 6741792.

The previous prime is 20226649. The next prime is 20226673. The reversal of 20226672 is 27662202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226673) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6508 + ... + 9099.

Almost surely, 2^20226672 is an apocalyptic number.

It is an amenable number.

20226672 is an abundant number, since it is smaller than the sum of its proper divisors (38318936).

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

20226672 is a wasteful number, since it uses less digits than its factorization.

20226672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15627 (or 15612 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20226672 is about 4497.4072530737. The cubic root of 20226672 is about 272.4633825611.

Adding to 20226672 its reverse (27662202), we get a palindrome (47888874).

The spelling of 20226672 in words is "twenty million, two hundred twenty-six thousand, six hundred seventy-two".