16428772 has 12 divisors (see below), whose sum is σ = 28917756. Its totient is φ = 8166560.

The previous prime is 16428757. The next prime is 16428779. The reversal of 16428772 is 27782461.

It can be written as a sum of positive squares in 2 ways, for example, as 15872256 + 556516 = 3984^2 + 746^2 .

It is not an unprimeable number, because it can be changed into a prime (16428779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11179 + ... + 12562.

It is an arithmetic number, because the mean of its divisors is an integer number (2409813).

Almost surely, 2^16428772 is an apocalyptic number.

It is an amenable number.

16428772 is a deficient number, since it is larger than the sum of its proper divisors (12488984).

16428772 is a wasteful number, since it uses less digits than its factorization.

16428772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23918 (or 23916 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 16428772 is about 4053.2421590623. The cubic root of 16428772 is about 254.2153092007.

The spelling of 16428772 in words is "sixteen million, four hundred twenty-eight thousand, seven hundred seventy-two".