16128428 has 12 divisors (see below), whose sum is σ = 29452080. Its totient is φ = 7713552.

The previous prime is 16128419. The next prime is 16128439. The reversal of 16128428 is 82482161.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16128394 and 16128403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87563 + ... + 87746.

It is an arithmetic number, because the mean of its divisors is an integer number (2454340).

Almost surely, 2^16128428 is an apocalyptic number.

It is an amenable number.

16128428 is a deficient number, since it is larger than the sum of its proper divisors (13323652).

16128428 is a wasteful number, since it uses less digits than its factorization.

16128428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175336 (or 175334 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 16128428 is about 4016.0214142855. The cubic root of 16128428 is about 252.6566188418.

The spelling of 16128428 in words is "sixteen million, one hundred twenty-eight thousand, four hundred twenty-eight".