99180100 has 72 divisors (see below), whose sum is σ = 222048288. Its totient is φ = 38438400.

The previous prime is 99180097. The next prime is 99180139. The reversal of 99180100 is 108199.

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, 757035 + ... + 757165.

It is an arithmetic number, because the mean of its divisors is an integer number (3084004).

Almost surely, 2^99180100 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 99180100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111024144).

99180100 is an abundant number, since it is smaller than the sum of its proper divisors (122868188).

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

99180100 is a wasteful number, since it uses less digits than its factorization.

99180100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 99180100 is about 9958.9206242444. The cubic root of 99180100 is about 462.8868543175.

Adding to 99180100 its reverse (108199), we get a palindrome (99288299).

The spelling of 99180100 in words is "ninety-nine million, one hundred eighty thousand, one hundred".