99318780 has 144 divisors (see below), whose sum is σ = 332527104. Its totient is φ = 23794560.

The previous prime is 99318773. The next prime is 99318787. The reversal of 99318780 is 8781399.

It is an interprime number because it is at equal distance from previous prime (99318773) and next prime (99318787).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99318787) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203697 + ... + 204183.

It is an arithmetic number, because the mean of its divisors is an integer number (2309216).

Almost surely, 2^99318780 is an apocalyptic number.

99318780 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99318780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166263552).

99318780 is an abundant number, since it is smaller than the sum of its proper divisors (233208324).

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

99318780 is a wasteful number, since it uses less digits than its factorization.

99318780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 99318780 is about 9965.8807939891. The cubic root of 99318780 is about 463.1024999040.

The spelling of 99318780 in words is "ninety-nine million, three hundred eighteen thousand, seven hundred eighty".