99812480 has 64 divisors (see below), whose sum is σ = 241617600. Its totient is φ = 39422976.

The previous prime is 99812477. The next prime is 99812497. The reversal of 99812480 is 8421899.

It is a tau number, because it is divible by the number of its divisors (64).

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, 52181 + ... + 54059.

It is an arithmetic number, because the mean of its divisors is an integer number (3775275).

Almost surely, 2^99812480 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 99812480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120808800).

99812480 is an abundant number, since it is smaller than the sum of its proper divisors (141805120).

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

99812480 is a wasteful number, since it uses less digits than its factorization.

99812480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1969 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 99812480 is about 9990.6196004052. The cubic root of 99812480 is about 463.8685715753.

The spelling of 99812480 in words is "ninety-nine million, eight hundred twelve thousand, four hundred eighty".