20408448 has 32 divisors (see below), whose sum is σ = 54210960. Its totient is φ = 6802688.

The previous prime is 20408419. The next prime is 20408459. The reversal of 20408448 is 84480402.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26190 + ... + 26957.

Almost surely, 2^20408448 is an apocalyptic number.

It is an amenable number.

20408448 is an abundant number, since it is smaller than the sum of its proper divisors (33802512).

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

20408448 is an equidigital number, since it uses as much as digits as its factorization.

20408448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53164 (or 53152 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 20408448 is about 4517.5710287720. The cubic root of 20408448 is about 273.2771541623.

The spelling of 20408448 in words is "twenty million, four hundred eight thousand, four hundred forty-eight".