99620280 has 192 divisors, whose sum is σ = 346076640. Its totient is φ = 25754112.

The previous prime is 99620273. The next prime is 99620299. The reversal of 99620280 is 8202699.

99620280 is a `hidden beast` number, since 9 + 9 + 620 + 28 + 0 = 666.

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

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

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 359502 + ... + 359778.

Almost surely, 2^99620280 is an apocalyptic number.

99620280 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 99620280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173038320).

99620280 is an abundant number, since it is smaller than the sum of its proper divisors (246456360).

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

99620280 is a wasteful number, since it uses less digits than its factorization.

99620280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 99620280 is about 9980.9959422895. The cubic root of 99620280 is about 463.5706367979.

The spelling of 99620280 in words is "ninety-nine million, six hundred twenty thousand, two hundred eighty".