16913640 has 64 divisors (see below), whose sum is σ = 53732160. Its totient is φ = 4244480.

The previous prime is 16913627. The next prime is 16913669. The reversal of 16913640 is 4631961.

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

It is a junction number, because it is equal to n+sod(n) for n = 16913598 and 16913607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2106 + ... + 6185.

It is an arithmetic number, because the mean of its divisors is an integer number (839565).

Almost surely, 2^16913640 is an apocalyptic number.

16913640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16913640 is an abundant number, since it is smaller than the sum of its proper divisors (36818520).

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

16913640 is a wasteful number, since it uses less digits than its factorization.

16913640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8322 (or 8318 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 16913640 is about 4112.6196031240. The cubic root of 16913640 is about 256.6920160117.

The spelling of 16913640 in words is "sixteen million, nine hundred thirteen thousand, six hundred forty".