20449488 has 40 divisors (see below), whose sum is σ = 54121536. Its totient is φ = 6649600.

The previous prime is 20449483. The next prime is 20449489. The reversal of 20449488 is 88494402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20449483) 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, 3228 + ... + 7163.

Almost surely, 2^20449488 is an apocalyptic number.

It is an amenable number.

20449488 is an abundant number, since it is smaller than the sum of its proper divisors (33672048).

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

20449488 is a wasteful number, since it uses less digits than its factorization.

20449488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10443 (or 10437 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 20449488 is about 4522.1110114636. Note that the first 3 decimals coincide. The cubic root of 20449488 is about 273.4602120977.

The spelling of 20449488 in words is "twenty million, four hundred forty-nine thousand, four hundred eighty-eight".