77130322 has 4 divisors (see below), whose sum is σ = 115695486. Its totient is φ = 38565160.

The previous prime is 77130299. The next prime is 77130331. The reversal of 77130322 is 22303177.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 71927361 + 5202961 = 8481^2 + 2281^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19282579 + ... + 19282582.

Almost surely, 2^77130322 is an apocalyptic number.

77130322 is a deficient number, since it is larger than the sum of its proper divisors (38565164).

77130322 is a wasteful number, since it uses less digits than its factorization.

77130322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38565163.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 77130322 is about 8782.3870331477. The cubic root of 77130322 is about 425.6719649128.

Adding to 77130322 its reverse (22303177), we get a palindrome (99433499).

The spelling of 77130322 in words is "seventy-seven million, one hundred thirty thousand, three hundred twenty-two".