16974321 has 32 divisors (see below), whose sum is σ = 28186368. Its totient is φ = 8847360.

The previous prime is 16974311. The next prime is 16974341. The reversal of 16974321 is 12347961.

It is not a de Polignac number, because 16974321 - 2⁵ = 16974289 is a prime.

It is a super-2 number, since 2×16974321² = 576255146822082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16974301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26161 + ... + 26801.

It is an arithmetic number, because the mean of its divisors is an integer number (880824).

Almost surely, 2^16974321 is an apocalyptic number.

It is an amenable number.

16974321 is a deficient number, since it is larger than the sum of its proper divisors (11212047).

16974321 is a wasteful number, since it uses less digits than its factorization.

16974321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761.

The product of its digits is 9072, while the sum is 33.

The square root of 16974321 is about 4119.9904126102. The cubic root of 16974321 is about 256.9986272744.

The spelling of 16974321 in words is "sixteen million, nine hundred seventy-four thousand, three hundred twenty-one".