99906240 has 112 divisors (see below), whose sum is σ = 362541312. Its totient is φ = 22834176.

The previous prime is 99906223. The next prime is 99906251. The reversal of 99906240 is 4260999.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714 + ... + 14153.

It is an arithmetic number, because the mean of its divisors is an integer number (3236976).

Almost surely, 2^99906240 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 99906240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181270656).

99906240 is an abundant number, since it is smaller than the sum of its proper divisors (262635072).

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

99906240 is a wasteful number, since it uses less digits than its factorization.

99906240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14894 (or 14884 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 99906240 is about 9995.3109006173. The cubic root of 99906240 is about 464.0137728769.

The spelling of 99906240 in words is "ninety-nine million, nine hundred six thousand, two hundred forty".