16720488 has 48 divisors (see below), whose sum is σ = 45508320. Its totient is φ = 5546016.

The previous prime is 16720481. The next prime is 16720511. The reversal of 16720488 is 88402761.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16720481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18495 + ... + 19377.

It is an arithmetic number, because the mean of its divisors is an integer number (948090).

Almost surely, 2^16720488 is an apocalyptic number.

16720488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16720488 is an abundant number, since it is smaller than the sum of its proper divisors (28787832).

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

16720488 is a wasteful number, since it uses less digits than its factorization.

16720488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1151 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 16720488 is about 4089.0693317673. The cubic root of 16720488 is about 255.7111406575.

The spelling of 16720488 in words is "sixteen million, seven hundred twenty thousand, four hundred eighty-eight".