16920824 has 16 divisors (see below), whose sum is σ = 33106320. Its totient is φ = 8092480.

The previous prime is 16920821. The next prime is 16920859. The reversal of 16920824 is 42802961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16920821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45797 + ... + 46164.

It is an arithmetic number, because the mean of its divisors is an integer number (2069145).

Almost surely, 2^16920824 is an apocalyptic number.

It is an amenable number.

16920824 is a deficient number, since it is larger than the sum of its proper divisors (16185496).

16920824 is a wasteful number, since it uses less digits than its factorization.

16920824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91990 (or 91986 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 16920824 is about 4113.4929196487. The cubic root of 16920824 is about 256.7283538317.

The spelling of 16920824 in words is "sixteen million, nine hundred twenty thousand, eight hundred twenty-four".