30112722 has 40 divisors (see below), whose sum is σ = 67976832. Its totient is φ = 9963000.

The previous prime is 30112697. The next prime is 30112723. The reversal of 30112722 is 22721103.

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 = 30112695 and 30112704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30112723) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23847 + ... + 25077.

Almost surely, 2^30112722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30112722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33988416).

30112722 is an abundant number, since it is smaller than the sum of its proper divisors (37864110).

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

30112722 is a wasteful number, since it uses less digits than its factorization.

30112722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 30112722 is about 5487.5059908851. The cubic root of 30112722 is about 311.1119347011. Note that the first 3 decimals are identical.

Adding to 30112722 its reverse (22721103), we get a palindrome (52833825).

The spelling of 30112722 in words is "thirty million, one hundred twelve thousand, seven hundred twenty-two".