76722130 has 16 divisors (see below), whose sum is σ = 138248280. Its totient is φ = 30655872.

The previous prime is 76722119. The next prime is 76722131. The reversal of 76722130 is 3122767.

It can be written as a sum of positive squares in 4 ways, for example, as 73153809 + 3568321 = 8553^2 + 1889^2 .

It is not an unprimeable number, because it can be changed into a prime (76722131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7102 + ... + 14278.

Almost surely, 2^76722130 is an apocalyptic number.

76722130 is a deficient number, since it is larger than the sum of its proper divisors (61526150).

76722130 is a wasteful number, since it uses less digits than its factorization.

76722130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 76722130 is about 8759.1169646261. The cubic root of 76722130 is about 424.9197172461.

Adding to 76722130 its reverse (3122767), we get a palindrome (79844897).

The spelling of 76722130 in words is "seventy-six million, seven hundred twenty-two thousand, one hundred thirty".