16720396 has 24 divisors (see below), whose sum is σ = 36481536. Its totient is φ = 6514320.

The previous prime is 16720369. The next prime is 16720409. The reversal of 16720396 is 69302761.

16720396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26836 + ... + 27451.

It is an arithmetic number, because the mean of its divisors is an integer number (1520064).

Almost surely, 2^16720396 is an apocalyptic number.

It is an amenable number.

16720396 is an abundant number, since it is smaller than the sum of its proper divisors (19761140).

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

16720396 is a wasteful number, since it uses less digits than its factorization.

16720396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54309 (or 54307 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 16720396 is about 4089.0580822483. The cubic root of 16720396 is about 255.7106716627.

The spelling of 16720396 in words is "sixteen million, seven hundred twenty thousand, three hundred ninety-six".