30293472 has 48 divisors (see below), whose sum is σ = 86752512. Its totient is φ = 9179520.

The previous prime is 30293449. The next prime is 30293477. The reversal of 30293472 is 27439203.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30293477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13288 + ... + 15399.

It is an arithmetic number, because the mean of its divisors is an integer number (1807344).

Almost surely, 2^30293472 is an apocalyptic number.

30293472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30293472 is an abundant number, since it is smaller than the sum of its proper divisors (56459040).

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

30293472 is a wasteful number, since it uses less digits than its factorization.

30293472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28711 (or 28703 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 30293472 is about 5503.9505811735. The cubic root of 30293472 is about 311.7331709467.

The spelling of 30293472 in words is "thirty million, two hundred ninety-three thousand, four hundred seventy-two".