99018240 has 80 divisors (see below), whose sum is σ = 316573488. Its totient is φ = 26402816.

The previous prime is 99018223. The next prime is 99018259. The reversal of 99018240 is 4281099.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×99018240² = 19609223705395200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234 + ... + 14126.

Almost surely, 2^99018240 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 99018240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158286744).

99018240 is an abundant number, since it is smaller than the sum of its proper divisors (217555248).

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

99018240 is a wasteful number, since it uses less digits than its factorization.

99018240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12919 (or 12903 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 99018240 is about 9950.7909233387. The cubic root of 99018240 is about 462.6349097547.

The spelling of 99018240 in words is "ninety-nine million, eighteen thousand, two hundred forty".