30219472 has 40 divisors (see below), whose sum is σ = 62386632. Its totient is φ = 14131200.

The previous prime is 30219457. The next prime is 30219499. The reversal of 30219472 is 27491203.

It can be written as a sum of positive squares in 4 ways, for example, as 9096256 + 21123216 = 3016^2 + 4596^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 30219472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65322 + ... + 65782.

Almost surely, 2^30219472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30219472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31193316).

30219472 is an abundant number, since it is smaller than the sum of its proper divisors (32167160).

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

30219472 is a wasteful number, since it uses less digits than its factorization.

30219472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 30219472 is about 5497.2240267248. The cubic root of 30219472 is about 311.4791331167.

The spelling of 30219472 in words is "thirty million, two hundred nineteen thousand, four hundred seventy-two".