16403680 has 24 divisors (see below), whose sum is σ = 38754072. Its totient is φ = 6561408.

The previous prime is 16403671. The next prime is 16403747. The reversal of 16403680 is 8630461.

16403680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51102 + ... + 51421.

It is an arithmetic number, because the mean of its divisors is an integer number (1614753).

Almost surely, 2^16403680 is an apocalyptic number.

16403680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16403680 is an abundant number, since it is smaller than the sum of its proper divisors (22350392).

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

16403680 is a wasteful number, since it uses less digits than its factorization.

16403680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102538 (or 102530 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 16403680 is about 4050.1456763924. The cubic root of 16403680 is about 254.0858205051.

The spelling of 16403680 in words is "sixteen million, four hundred three thousand, six hundred eighty".