16056404 has 24 divisors (see below), whose sum is σ = 34583808. Its totient is φ = 6351840.

The previous prime is 16056373. The next prime is 16056421. The reversal of 16056404 is 40465061.

It is a happy number.

It is a super-2 number, since 2×16056404² = 515616218822432, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 21692 + ... + 22419.

It is an arithmetic number, because the mean of its divisors is an integer number (1440992).

Almost surely, 2^16056404 is an apocalyptic number.

16056404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16056404 is an abundant number, since it is smaller than the sum of its proper divisors (18527404).

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

16056404 is a wasteful number, since it uses less digits than its factorization.

16056404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44135 (or 44133 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 16056404 is about 4007.0442972346. The cubic root of 16056404 is about 252.2799651592.

The spelling of 16056404 in words is "sixteen million, fifty-six thousand, four hundred four".