30993222 has 32 divisors (see below), whose sum is σ = 67126752. Its totient is φ = 9483264.

The previous prime is 30993139. The next prime is 30993251. The reversal of 30993222 is 22239903.

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 30993222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14358 + ... + 16374.

It is an arithmetic number, because the mean of its divisors is an integer number (2097711).

Almost surely, 2^30993222 is an apocalyptic number.

30993222 is an abundant number, since it is smaller than the sum of its proper divisors (36133530).

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

30993222 is a wasteful number, since it uses less digits than its factorization.

30993222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 30993222 is about 5567.1556471865. The cubic root of 30993222 is about 314.1151686477.

The spelling of 30993222 in words is "thirty million, nine hundred ninety-three thousand, two hundred twenty-two".