30130722 has 24 divisors (see below), whose sum is σ = 65960076. Its totient is φ = 9939456.

The previous prime is 30130721. The next prime is 30130741. The reversal of 30130722 is 22703103.

It can be written as a sum of positive squares in 2 ways, for example, as 27029601 + 3101121 = 5199^2 + 1761^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30130695 and 30130704.

It is not an unprimeable number, because it can be changed into a prime (30130721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6883 + ... + 10374.

Almost surely, 2^30130722 is an apocalyptic number.

30130722 is an abundant number, since it is smaller than the sum of its proper divisors (35829354).

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

30130722 is a wasteful number, since it uses less digits than its factorization.

30130722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17362 (or 17359 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 30130722 is about 5489.1458351915. The cubic root of 30130722 is about 311.1739118215.

Adding to 30130722 its reverse (22703103), we get a palindrome (52833825).

The spelling of 30130722 in words is "thirty million, one hundred thirty thousand, seven hundred twenty-two".