18887112 has 24 divisors (see below), whose sum is σ = 51152790. Its totient is φ = 6295680.

The previous prime is 18887047. The next prime is 18887123. The reversal of 18887112 is 21178881.

It can be written as a sum of positive squares in only one way, i.e., 13439556 + 5447556 = 3666^2 + 2334^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131089 + ... + 131232.

Almost surely, 2^18887112 is an apocalyptic number.

18887112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18887112 is an abundant number, since it is smaller than the sum of its proper divisors (32265678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18887112 is a wasteful number, since it uses less digits than its factorization.

18887112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262333 (or 262326 counting only the distinct ones).

The product of its digits is 7168, while the sum is 36.

The square root of 18887112 is about 4345.9305102590. The cubic root of 18887112 is about 266.3106401585.

It can be divided in two parts, 18 and 887112, that multiplied together give a square (15968016 = 3996²).

The spelling of 18887112 in words is "eighteen million, eight hundred eighty-seven thousand, one hundred twelve".