99271680 has 176 divisors, whose sum is σ = 332498304. Its totient is φ = 25231360.

The previous prime is 99271663. The next prime is 99271681. The reversal of 99271680 is 8617299.

It is not an unprimeable number, because it can be changed into a prime (99271681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353140 + ... + 353420.

Almost surely, 2^99271680 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 99271680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166249152).

99271680 is an abundant number, since it is smaller than the sum of its proper divisors (233226624).

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

99271680 is a wasteful number, since it uses less digits than its factorization.

99271680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 99271680 is about 9963.5174511816. The cubic root of 99271680 is about 463.0292825439.

The spelling of 99271680 in words is "ninety-nine million, two hundred seventy-one thousand, six hundred eighty".