18115048 has 32 divisors (see below), whose sum is σ = 39461760. Its totient is φ = 7634880.

The previous prime is 18115043. The next prime is 18115061. The reversal of 18115048 is 84051181.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (18115043) by changing a digit.

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, 765 + ... + 6067.

It is an arithmetic number, because the mean of its divisors is an integer number (1233180).

Almost surely, 2^18115048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18115048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19730880).

18115048 is an abundant number, since it is smaller than the sum of its proper divisors (21346712).

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

18115048 is a wasteful number, since it uses less digits than its factorization.

18115048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5377 (or 5373 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 18115048 is about 4256.1776278722. The cubic root of 18115048 is about 262.6313078512.

It can be divided in two parts, 1811 and 5048, that added together give a cube (6859 = 19³).

The spelling of 18115048 in words is "eighteen million, one hundred fifteen thousand, forty-eight".