16974405 has 24 divisors (see below), whose sum is σ = 33626112. Its totient is φ = 7759584.

The previous prime is 16974403. The next prime is 16974427. The reversal of 16974405 is 50447961.

It is not a de Polignac number, because 16974405 - 2¹ = 16974403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16974405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16974401) 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 in 23 ways as a sum of consecutive naturals, for example, 26629 + ... + 27258.

It is an arithmetic number, because the mean of its divisors is an integer number (1401088).

Almost surely, 2^16974405 is an apocalyptic number.

16974405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16974405 is a deficient number, since it is larger than the sum of its proper divisors (16651707).

16974405 is a wasteful number, since it uses less digits than its factorization.

16974405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53905 (or 53902 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 16974405 is about 4120.0006067961. Note that the first 3 decimals coincide. The cubic root of 16974405 is about 256.9990512060. Note that the first 3 decimals are identical.

The spelling of 16974405 in words is "sixteen million, nine hundred seventy-four thousand, four hundred five".