99252720 has 240 divisors, whose sum is σ = 389975040. Its totient is φ = 22150656.

The previous prime is 99252719. The next prime is 99252739. The reversal of 99252720 is 2725299.

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

It is a super-2 number, since 2×99252720² = 19702204854796800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 236671 + ... + 237089.

It is an arithmetic number, because the mean of its divisors is an integer number (1624896).

Almost surely, 2^99252720 is an apocalyptic number.

99252720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99252720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194987520).

99252720 is an abundant number, since it is smaller than the sum of its proper divisors (290722320).

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

99252720 is a wasteful number, since it uses less digits than its factorization.

99252720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 99252720 is about 9962.5659345371. The cubic root of 99252720 is about 462.9998025211. Note that the first 3 decimals are identical.

The spelling of 99252720 in words is "ninety-nine million, two hundred fifty-two thousand, seven hundred twenty".