16128772 has 24 divisors (see below), whose sum is σ = 31116960. Its totient is φ = 7253760.

The previous prime is 16128769. The next prime is 16128799. The reversal of 16128772 is 27782161.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2379 + ... + 6157.

It is an arithmetic number, because the mean of its divisors is an integer number (1296540).

Almost surely, 2^16128772 is an apocalyptic number.

It is an amenable number.

16128772 is a deficient number, since it is larger than the sum of its proper divisors (14988188).

16128772 is a wasteful number, since it uses less digits than its factorization.

16128772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891 (or 3889 counting only the distinct ones).

The product of its digits is 9408, while the sum is 34.

The square root of 16128772 is about 4016.0642425141. The cubic root of 16128772 is about 252.6584151164.

It can be divided in two parts, 16128 and 772, that added together give a square (16900 = 130²).

The spelling of 16128772 in words is "sixteen million, one hundred twenty-eight thousand, seven hundred seventy-two".