78922998 has 224 divisors, whose sum is σ = 239235840. Its totient is φ = 18895680.

The previous prime is 78922997. The next prime is 78923021. The reversal of 78922998 is 89922987.

It is a super-2 number, since 2×78922998² = 12457679226616008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78922997) by changing a digit.

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 111 ways as a sum of consecutive naturals, for example, 2133036 + ... + 2133072.

Almost surely, 2^78922998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78922998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119617920).

78922998 is an abundant number, since it is smaller than the sum of its proper divisors (160312842).

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

78922998 is a wasteful number, since it uses less digits than its factorization.

78922998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 79 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 78922998 is about 8883.8616603367. The cubic root of 78922998 is about 428.9445867103.

The spelling of 78922998 in words is "seventy-eight million, nine hundred twenty-two thousand, nine hundred ninety-eight".