16725720 has 64 divisors (see below), whose sum is σ = 54743040. Its totient is φ = 4054400.

The previous prime is 16725713. The next prime is 16725727. The reversal of 16725720 is 2752761.

It is an interprime number because it is at equal distance from previous prime (16725713) and next prime (16725727).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16725727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5016 + ... + 7655.

It is an arithmetic number, because the mean of its divisors is an integer number (855360).

Almost surely, 2^16725720 is an apocalyptic number.

16725720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16725720 is an abundant number, since it is smaller than the sum of its proper divisors (38017320).

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

16725720 is a wasteful number, since it uses less digits than its factorization.

16725720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12696 (or 12692 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 16725720 is about 4089.7090361051. The cubic root of 16725720 is about 255.7378093602.

The spelling of 16725720 in words is "sixteen million, seven hundred twenty-five thousand, seven hundred twenty".