16920976 has 10 divisors (see below), whose sum is σ = 32784422. Its totient is φ = 8460480.

The previous prime is 16920901. The next prime is 16920979. The reversal of 16920976 is 67902961.

It can be written as a sum of positive squares in only one way, i.e., 16646400 + 274576 = 4080^2 + 524^2 .

It is not an unprimeable number, because it can be changed into a prime (16920979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528765 + ... + 528796.

Almost surely, 2^16920976 is an apocalyptic number.

16920976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16920976 is a deficient number, since it is larger than the sum of its proper divisors (15863446).

16920976 is a wasteful number, since it uses less digits than its factorization.

16920976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057569 (or 1057563 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 16920976 is about 4113.5113953896. The cubic root of 16920976 is about 256.7291225609.

The spelling of 16920976 in words is "sixteen million, nine hundred twenty thousand, nine hundred seventy-six".