99603840 has 128 divisors (see below), whose sum is σ = 362891520. Its totient is φ = 22763520.

The previous prime is 99603827. The next prime is 99603863. The reversal of 99603840 is 4830699.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9735 + ... + 17145.

It is an arithmetic number, because the mean of its divisors is an integer number (2835090).

Almost surely, 2^99603840 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 99603840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181445760).

99603840 is an abundant number, since it is smaller than the sum of its proper divisors (263287680).

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

99603840 is a wasteful number, since it uses less digits than its factorization.

99603840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7440 (or 7428 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 99603840 is about 9980.1723432013. The cubic root of 99603840 is about 463.5451348936.

The spelling of 99603840 in words is "ninety-nine million, six hundred three thousand, eight hundred forty".