16974490 has 32 divisors (see below), whose sum is σ = 33803280. Its totient is φ = 6096384.

The previous prime is 16974487. The next prime is 16974499. The reversal of 16974490 is 9447961.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4036081 + 12938409 = 2009^2 + 3597^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16974499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3046 + ... + 6574.

Almost surely, 2^16974490 is an apocalyptic number.

16974490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16974490 is a deficient number, since it is larger than the sum of its proper divisors (16828790).

16974490 is a wasteful number, since it uses less digits than its factorization.

16974490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 16974490 is about 4120.0109223156. The cubic root of 16974490 is about 256.9994801829. Note that the first 3 decimals are identical.

The spelling of 16974490 in words is "sixteen million, nine hundred seventy-four thousand, four hundred ninety".