16786920 has 32 divisors (see below), whose sum is σ = 50361120. Its totient is φ = 4476480.

The previous prime is 16786919. The next prime is 16786927. The reversal of 16786920 is 2968761.

It is not an unprimeable number, because it can be changed into a prime (16786927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69826 + ... + 70065.

It is an arithmetic number, because the mean of its divisors is an integer number (1573785).

Almost surely, 2^16786920 is an apocalyptic number.

16786920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16786920 is an abundant number, since it is smaller than the sum of its proper divisors (33574200).

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

16786920 is a wasteful number, since it uses less digits than its factorization.

16786920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139905 (or 139901 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 16786920 is about 4097.1843990721. The cubic root of 16786920 is about 256.0493475833.

The spelling of 16786920 in words is "sixteen million, seven hundred eighty-six thousand, nine hundred twenty".