30919244 has 12 divisors (see below), whose sum is σ = 54147744. Its totient is φ = 15448464.

The previous prime is 30919219. The next prime is 30919247. The reversal of 30919244 is 44291903.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30919244.

It is not an unprimeable number, because it can be changed into a prime (30919247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8717 + ... + 11739.

It is an arithmetic number, because the mean of its divisors is an integer number (4512312).

Almost surely, 2^30919244 is an apocalyptic number.

It is an amenable number.

30919244 is a deficient number, since it is larger than the sum of its proper divisors (23228500).

30919244 is a wasteful number, since it uses less digits than its factorization.

30919244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5584 (or 5582 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 30919244 is about 5560.5075307925. The cubic root of 30919244 is about 313.8650480978.

The spelling of 30919244 in words is "thirty million, nine hundred nineteen thousand, two hundred forty-four".