79800450 has 96 divisors (see below), whose sum is σ = 205701120. Its totient is φ = 20462400.

The previous prime is 79800439. The next prime is 79800451. The reversal of 79800450 is 5400897.

It is a super-2 number, since 2×79800450² = 12736223640405000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79800451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 628287 + ... + 628413.

It is an arithmetic number, because the mean of its divisors is an integer number (2142720).

Almost surely, 2^79800450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79800450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102850560).

79800450 is an abundant number, since it is smaller than the sum of its proper divisors (125900670).

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

79800450 is a wasteful number, since it uses less digits than its factorization.

79800450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 79800450 is about 8933.1097608839. The cubic root of 79800450 is about 430.5283751755.

The spelling of 79800450 in words is "seventy-nine million, eight hundred thousand, four hundred fifty".