99041280 has 240 divisors, whose sum is σ = 352310784. Its totient is φ = 23592960.

The previous prime is 99041221. The next prime is 99041287. The reversal of 99041280 is 8214099.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99041287) 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, 3194865 + ... + 3194895.

Almost surely, 2^99041280 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 99041280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176155392).

99041280 is an abundant number, since it is smaller than the sum of its proper divisors (253269504).

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

99041280 is a wasteful number, since it uses less digits than its factorization.

99041280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 54 counting only the distinct ones).

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

The square root of 99041280 is about 9951.9485529217. The cubic root of 99041280 is about 462.6707896145.

The spelling of 99041280 in words is "ninety-nine million, forty-one thousand, two hundred eighty".