16813320 has 32 divisors (see below), whose sum is σ = 50440320. Its totient is φ = 4483520.

The previous prime is 16813319. The next prime is 16813339. The reversal of 16813320 is 2331861.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 69936 + ... + 70175.

It is an arithmetic number, because the mean of its divisors is an integer number (1576260).

Almost surely, 2^16813320 is an apocalyptic number.

16813320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16813320 is an abundant number, since it is smaller than the sum of its proper divisors (33627000).

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

16813320 is a wasteful number, since it uses less digits than its factorization.

16813320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140125 (or 140121 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 16813320 is about 4100.4048580598. The cubic root of 16813320 is about 256.1835028723.

The spelling of 16813320 in words is "sixteen million, eight hundred thirteen thousand, three hundred twenty".