79115400 has 576 divisors, whose sum is σ = 356227200. Its totient is φ = 15966720.

The previous prime is 79115389. The next prime is 79115417. The reversal of 79115400 is 451197.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3439789 + ... + 3439811.

It is an arithmetic number, because the mean of its divisors is an integer number (618450).

Almost surely, 2^79115400 is an apocalyptic number.

79115400 is a gapful number since it is divisible by the number (70) 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 79115400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178113600).

79115400 is an abundant number, since it is smaller than the sum of its proper divisors (277111800).

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

79115400 is a wasteful number, since it uses less digits than its factorization.

79115400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 79115400 is about 8894.6838055099. The cubic root of 79115400 is about 429.2928705828.

Adding to 79115400 its reverse (451197), we get a palindrome (79566597).

The spelling of 79115400 in words is "seventy-nine million, one hundred fifteen thousand, four hundred".