16720704 has 336 divisors, whose sum is σ = 66568320. Its totient is φ = 3870720.

The previous prime is 16720699. The next prime is 16720789. The reversal of 16720704 is 40702761.

16720704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 576562 + ... + 576590.

It is an arithmetic number, because the mean of its divisors is an integer number (198120).

Almost surely, 2^16720704 is an apocalyptic number.

16720704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16720704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33284160).

16720704 is an abundant number, since it is smaller than the sum of its proper divisors (49847616).

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

16720704 is a wasteful number, since it uses less digits than its factorization.

16720704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 16720704 is about 4089.0957435599. The cubic root of 16720704 is about 255.7122417691.

It can be divided in two parts, 16720 and 704, that added together give a square (17424 = 132²).

The spelling of 16720704 in words is "sixteen million, seven hundred twenty thousand, seven hundred four".