30523472 has 30 divisors (see below), whose sum is σ = 68796378. Its totient is φ = 13081152.

The previous prime is 30523459. The next prime is 30523477. The reversal of 30523472 is 27432503.

It can be written as a sum of positive squares in only one way, i.e., 15808576 + 14714896 = 3976^2 + 3836^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30523477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18683 + ... + 20250.

Almost surely, 2^30523472 is an apocalyptic number.

It is an amenable number.

30523472 is an abundant number, since it is smaller than the sum of its proper divisors (38272906).

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

30523472 is a wasteful number, since it uses less digits than its factorization.

30523472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38955 (or 38942 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 30523472 is about 5524.8051549353. The cubic root of 30523472 is about 312.5201164650.

Adding to 30523472 its reverse (27432503), we get a palindrome (57955975).

The spelling of 30523472 in words is "thirty million, five hundred twenty-three thousand, four hundred seventy-two".