16920812 has 6 divisors (see below), whose sum is σ = 29611428. Its totient is φ = 8460404.

The previous prime is 16920793. The next prime is 16920817. The reversal of 16920812 is 21802961.

It is not an unprimeable number, because it can be changed into a prime (16920817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115098 + ... + 2115105.

It is an arithmetic number, because the mean of its divisors is an integer number (4935238).

Almost surely, 2^16920812 is an apocalyptic number.

It is an amenable number.

16920812 is a deficient number, since it is larger than the sum of its proper divisors (12690616).

16920812 is a wasteful number, since it uses less digits than its factorization.

16920812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230207 (or 4230205 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 16920812 is about 4113.4914610340. The cubic root of 16920812 is about 256.7282931424.

The spelling of 16920812 in words is "sixteen million, nine hundred twenty thousand, eight hundred twelve".