77530122 has 48 divisors (see below), whose sum is σ = 176877792. Its totient is φ = 25446960.

The previous prime is 77530111. The next prime is 77530151. The reversal of 77530122 is 22103577.

77530122 is a `hidden beast` number, since 7 + 7 + 530 + 122 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31372 + ... + 33752.

It is an arithmetic number, because the mean of its divisors is an integer number (3684954).

Almost surely, 2^77530122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77530122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88438896).

77530122 is an abundant number, since it is smaller than the sum of its proper divisors (99347670).

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

77530122 is a wasteful number, since it uses less digits than its factorization.

77530122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465 (or 2453 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 77530122 is about 8805.1190792629. The cubic root of 77530122 is about 426.4061787547.

Adding to 77530122 its reverse (22103577), we get a palindrome (99633699).

The spelling of 77530122 in words is "seventy-seven million, five hundred thirty thousand, one hundred twenty-two".