18828136 has 8 divisors (see below), whose sum is σ = 35302770. Its totient is φ = 9414064.

The previous prime is 18828133. The next prime is 18828137. The reversal of 18828136 is 63182881.

It can be written as a sum of positive squares in only one way, i.e., 9647236 + 9180900 = 3106^2 + 3030^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 18828095 and 18828104.

It is not an unprimeable number, because it can be changed into a prime (18828133) by changing a digit.

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 as a sum of consecutive naturals, namely, 1176751 + ... + 1176766.

Almost surely, 2^18828136 is an apocalyptic number.

It is an amenable number.

18828136 is a deficient number, since it is larger than the sum of its proper divisors (16474634).

18828136 is a wasteful number, since it uses less digits than its factorization.

18828136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353523 (or 2353519 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

The square root of 18828136 is about 4339.1400069599. The cubic root of 18828136 is about 266.0331614865.

The spelling of 18828136 in words is "eighteen million, eight hundred twenty-eight thousand, one hundred thirty-six".