99822078 has 64 divisors (see below), whose sum is σ = 232888320. Its totient is φ = 31656096.

The previous prime is 99822061. The next prime is 99822083. The reversal of 99822078 is 87022899.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93375 + ... + 94437.

It is an arithmetic number, because the mean of its divisors is an integer number (3638880).

Almost surely, 2^99822078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99822078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116444160).

99822078 is an abundant number, since it is smaller than the sum of its proper divisors (133066242).

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

99822078 is a wasteful number, since it uses less digits than its factorization.

99822078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 99822078 is about 9991.0999394461. The cubic root of 99822078 is about 463.8834396822.

The spelling of 99822078 in words is "ninety-nine million, eight hundred twenty-two thousand, seventy-eight".