99012480 has 256 divisors, whose sum is σ = 370137600. Its totient is φ = 22044672.

The previous prime is 99012479. The next prime is 99012491. The reversal of 99012480 is 8421099.

99012480 = 490² + 491² + ... + 745².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 712251 + ... + 712389.

It is an arithmetic number, because the mean of its divisors is an integer number (1445850).

Almost surely, 2^99012480 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 99012480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185068800).

99012480 is an abundant number, since it is smaller than the sum of its proper divisors (271125120).

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

99012480 is a wasteful number, since it uses less digits than its factorization.

99012480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 209 counting only the distinct ones).

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

The square root of 99012480 is about 9950.5014948996. The cubic root of 99012480 is about 462.6259389201.

The spelling of 99012480 in words is "ninety-nine million, twelve thousand, four hundred eighty".