30985722 has 24 divisors (see below), whose sum is σ = 67238964. Its totient is φ = 10312704.

The previous prime is 30985711. The next prime is 30985723. The reversal of 30985722 is 22758903.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27029601 + 3956121 = 5199^2 + 1989^2 .

It is a super-2 number, since 2×30985722² = 1920229935722568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30985723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20008 + ... + 21500.

Almost surely, 2^30985722 is an apocalyptic number.

30985722 is an abundant number, since it is smaller than the sum of its proper divisors (36253242).

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

30985722 is a wasteful number, since it uses less digits than its factorization.

30985722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654 (or 2651 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 30985722 is about 5566.4820129055. The cubic root of 30985722 is about 314.0898291953.

The spelling of 30985722 in words is "thirty million, nine hundred eighty-five thousand, seven hundred twenty-two".