99134720 has 72 divisors (see below), whose sum is σ = 243379080. Its totient is φ = 38666240.

The previous prime is 99134713. The next prime is 99134767. The reversal of 99134720 is 2743199.

It can be written as a sum of positive squares in 4 ways, for example, as 92416 + 99042304 = 304^2 + 9952^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51536 + ... + 53424.

It is an arithmetic number, because the mean of its divisors is an integer number (3380265).

Almost surely, 2^99134720 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 99134720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121689540).

99134720 is an abundant number, since it is smaller than the sum of its proper divisors (144244360).

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

99134720 is a wasteful number, since it uses less digits than its factorization.

99134720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951 (or 1937 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 99134720 is about 9956.6420042101. The cubic root of 99134720 is about 462.8162453613.

The spelling of 99134720 in words is "ninety-nine million, one hundred thirty-four thousand, seven hundred twenty".