16720748 has 36 divisors (see below), whose sum is σ = 32510520. Its totient is φ = 7518720.

The previous prime is 16720699. The next prime is 16720789. The reversal of 16720748 is 84702761.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86540 + ... + 86732.

It is an arithmetic number, because the mean of its divisors is an integer number (903070).

Almost surely, 2^16720748 is an apocalyptic number.

It is an amenable number.

16720748 is a deficient number, since it is larger than the sum of its proper divisors (15789772).

16720748 is a wasteful number, since it uses less digits than its factorization.

16720748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 16720748 is about 4089.1011237190. The cubic root of 16720748 is about 255.7124660685.

The spelling of 16720748 in words is "sixteen million, seven hundred twenty thousand, seven hundred forty-eight".