16974390 has 16 divisors (see below), whose sum is σ = 40738608. Its totient is φ = 4526496.

The previous prime is 16974371. The next prime is 16974401. The reversal of 16974390 is 9347961.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282877 + ... + 282936.

It is an arithmetic number, because the mean of its divisors is an integer number (2546163).

Almost surely, 2^16974390 is an apocalyptic number.

16974390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16974390 is an abundant number, since it is smaller than the sum of its proper divisors (23764218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16974390 is a wasteful number, since it uses less digits than its factorization.

16974390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565823.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 16974390 is about 4119.9987864076. The cubic root of 16974390 is about 256.9989755040.

The spelling of 16974390 in words is "sixteen million, nine hundred seventy-four thousand, three hundred ninety".