79220700 has 288 divisors, whose sum is σ = 286301120. Its totient is φ = 18662400.

The previous prime is 79220681. The next prime is 79220707. The reversal of 79220700 is 702297.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79220707) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1298670 + ... + 1298730.

Almost surely, 2^79220700 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 79220700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143150560).

79220700 is an abundant number, since it is smaller than the sum of its proper divisors (207080420).

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

79220700 is a wasteful number, since it uses less digits than its factorization.

79220700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 79220700 is about 8900.6011032963. The cubic root of 79220700 is about 429.4832443863.

Adding to 79220700 its reverse (702297), we get a palindrome (79922997).

The spelling of 79220700 in words is "seventy-nine million, two hundred twenty thousand, seven hundred".