28418128 has 10 divisors (see below), whose sum is σ = 55060154. Its totient is φ = 14209056.

The previous prime is 28418119. The next prime is 28418147. The reversal of 28418128 is 82181482.

It can be written as a sum of positive squares in only one way, i.e., 20866624 + 7551504 = 4568^2 + 2748^2 .

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 28418093 and 28418102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 888051 + ... + 888082.

Almost surely, 2^28418128 is an apocalyptic number.

It is an amenable number.

28418128 is a deficient number, since it is larger than the sum of its proper divisors (26642026).

28418128 is a wasteful number, since it uses less digits than its factorization.

28418128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776141 (or 1776135 counting only the distinct ones).

The product of its digits is 8192, while the sum is 34.

The square root of 28418128 is about 5330.8655957546. The cubic root of 28418128 is about 305.1629622728.

The spelling of 28418128 in words is "twenty-eight million, four hundred eighteen thousand, one hundred twenty-eight".