16920448 has 32 divisors (see below), whose sum is σ = 34229160. Its totient is φ = 8329728.

The previous prime is 16920439. The next prime is 16920461. The reversal of 16920448 is 84402961.

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

It is a congruent number.

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, 7590 + ... + 9562.

Almost surely, 2^16920448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16920448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17114580).

16920448 is an abundant number, since it is smaller than the sum of its proper divisors (17308712).

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

16920448 is an equidigital number, since it uses as much as digits as its factorization.

16920448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 16920448 is about 4113.4472161437. The cubic root of 16920448 is about 256.7264522187.

The spelling of 16920448 in words is "sixteen million, nine hundred twenty thousand, four hundred forty-eight".