16804442 has 4 divisors (see below), whose sum is σ = 25206666. Its totient is φ = 8402220.

The previous prime is 16804433. The next prime is 16804451. The reversal of 16804442 is 24440861.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (16804433) and next prime (16804451).

It can be written as a sum of positive squares in only one way, i.e., 14984641 + 1819801 = 3871^2 + 1349^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4201109 + ... + 4201112.

Almost surely, 2^16804442 is an apocalyptic number.

16804442 is a deficient number, since it is larger than the sum of its proper divisors (8402224).

16804442 is an equidigital number, since it uses as much as digits as its factorization.

16804442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8402223.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 16804442 is about 4099.3221390859. The cubic root of 16804442 is about 256.1384037570.

The spelling of 16804442 in words is "sixteen million, eight hundred four thousand, four hundred forty-two".