99018540 has 72 divisors (see below), whose sum is σ = 318034080. Its totient is φ = 24850944.

The previous prime is 99018539. The next prime is 99018553. The reversal of 99018540 is 4581099.

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

It is a junction number, because it is equal to n+sod(n) for n = 99018495 and 99018504.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13120 + ... + 19239.

It is an arithmetic number, because the mean of its divisors is an integer number (4417140).

Almost surely, 2^99018540 is an apocalyptic number.

99018540 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99018540 is an abundant number, since it is smaller than the sum of its proper divisors (219015540).

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

99018540 is a wasteful number, since it uses less digits than its factorization.

99018540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32391 (or 32386 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 99018540 is about 9950.8059975059. The cubic root of 99018540 is about 462.6353769761.

The spelling of 99018540 in words is "ninety-nine million, eighteen thousand, five hundred forty".