30247572 has 12 divisors (see below), whose sum is σ = 70577696. Its totient is φ = 10082520.

The previous prime is 30247571. The next prime is 30247603. The reversal of 30247572 is 27574203.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×30247572² = 1829831223790368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30247571) 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, 1260304 + ... + 1260327.

Almost surely, 2^30247572 is an apocalyptic number.

It is an amenable number.

30247572 is an abundant number, since it is smaller than the sum of its proper divisors (40330124).

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

30247572 is a wasteful number, since it uses less digits than its factorization.

30247572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520638 (or 2520636 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 30247572 is about 5499.7792682980. The cubic root of 30247572 is about 311.5756476217.

It can be divided in two parts, 302 and 47572, that added together give a palindrome (47874).

The spelling of 30247572 in words is "thirty million, two hundred forty-seven thousand, five hundred seventy-two".