18815088 has 40 divisors (see below), whose sum is σ = 49099536. Its totient is φ = 6208000.

The previous prime is 18815063. The next prime is 18815089. The reversal of 18815088 is 88051881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18815089) 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, 2908 + ... + 6788.

Almost surely, 2^18815088 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 18815088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24549768).

18815088 is an abundant number, since it is smaller than the sum of its proper divisors (30284448).

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

18815088 is a wasteful number, since it uses less digits than its factorization.

18815088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993 (or 3987 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 39.

The square root of 18815088 is about 4337.6362226448. The cubic root of 18815088 is about 265.9716931455.

The spelling of 18815088 in words is "eighteen million, eight hundred fifteen thousand, eighty-eight".