16404382 has 16 divisors (see below), whose sum is σ = 25805952. Its totient is φ = 7806040.

The previous prime is 16404373. The next prime is 16404389. The reversal of 16404382 is 28340461.

It is a self number, because there is not a number n which added to its sum of digits gives 16404382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16404389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9657 + ... + 11227.

It is an arithmetic number, because the mean of its divisors is an integer number (1612872).

Almost surely, 2^16404382 is an apocalyptic number.

16404382 is a deficient number, since it is larger than the sum of its proper divisors (9401570).

16404382 is a wasteful number, since it uses less digits than its factorization.

16404382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 16404382 is about 4050.2323390146. The cubic root of 16404382 is about 254.0894450109.

The spelling of 16404382 in words is "sixteen million, four hundred four thousand, three hundred eighty-two".