20489268 has 24 divisors (see below), whose sum is σ = 49101472. Its totient is φ = 6645024.

The previous prime is 20489257. The next prime is 20489269. The reversal of 20489268 is 86298402.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20489269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22630 + ... + 23517.

Almost surely, 2^20489268 is an apocalyptic number.

It is an amenable number.

20489268 is an abundant number, since it is smaller than the sum of its proper divisors (28612204).

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

20489268 is a wasteful number, since it uses less digits than its factorization.

20489268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46191 (or 46189 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 20489268 is about 4526.5072627800. The cubic root of 20489268 is about 273.6374162262.

The spelling of 20489268 in words is "twenty million, four hundred eighty-nine thousand, two hundred sixty-eight".