99710280 has 96 divisors (see below), whose sum is σ = 326135160. Its totient is φ = 26419200.

The previous prime is 99710269. The next prime is 99710293. The reversal of 99710280 is 8201799.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 97653924 + 2056356 = 9882^2 + 1434^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61480 + ... + 63080.

Almost surely, 2^99710280 is an apocalyptic number.

99710280 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 99710280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163067580).

99710280 is an abundant number, since it is smaller than the sum of its proper divisors (226424880).

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

99710280 is a wasteful number, since it uses less digits than its factorization.

99710280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791 (or 1784 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 99710280 is about 9985.5034925636. The cubic root of 99710280 is about 463.7101960640.

The spelling of 99710280 in words is "ninety-nine million, seven hundred ten thousand, two hundred eighty".