79022500 has 60 divisors (see below), whose sum is σ = 175578172. Its totient is φ = 31104000.

The previous prime is 79022497. The next prime is 79022509. The reversal of 79022500 is 522097.

It can be written as a sum of positive squares in 10 ways, for example, as 71503936 + 7518564 = 8456^2 + 2742^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79022509) 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 19 ways as a sum of consecutive naturals, for example, 182284 + ... + 182716.

Almost surely, 2^79022500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79022500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87789086).

79022500 is an abundant number, since it is smaller than the sum of its proper divisors (96555672).

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

79022500 is a wasteful number, since it uses less digits than its factorization.

79022500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 79022500 is about 8889.4600510942. The cubic root of 79022500 is about 429.1247746627.

Adding to 79022500 its reverse (522097), we get a palindrome (79544597).

The spelling of 79022500 in words is "seventy-nine million, twenty-two thousand, five hundred".