99273520 has 80 divisors (see below), whose sum is σ = 243055872. Its totient is φ = 37635840.

The previous prime is 99273481. The next prime is 99273521. The reversal of 99273520 is 2537299.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 99273520.

It is not an unprimeable number, because it can be changed into a prime (99273521) 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, 299755 + ... + 300085.

Almost surely, 2^99273520 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 99273520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121527936).

99273520 is an abundant number, since it is smaller than the sum of its proper divisors (143782352).

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

99273520 is a wasteful number, since it uses less digits than its factorization.

99273520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 99273520 is about 9963.6097876222. The cubic root of 99273520 is about 463.0321432745.

The spelling of 99273520 in words is "ninety-nine million, two hundred seventy-three thousand, five hundred twenty".