16400474 has 8 divisors (see below), whose sum is σ = 24630240. Its totient is φ = 8190396.

The previous prime is 16400473. The next prime is 16400513. The reversal of 16400474 is 47400461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (16400473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2624 + ... + 6299.

It is an arithmetic number, because the mean of its divisors is an integer number (3078780).

Almost surely, 2^16400474 is an apocalyptic number.

16400474 is a deficient number, since it is larger than the sum of its proper divisors (8229766).

16400474 is an equidigital number, since it uses as much as digits as its factorization.

16400474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9844.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 16400474 is about 4049.7498688191. The cubic root of 16400474 is about 254.0692662478.

The spelling of 16400474 in words is "sixteen million, four hundred thousand, four hundred seventy-four".