30561472 has 14 divisors (see below), whose sum is σ = 60645548. Its totient is φ = 15280704.

The previous prime is 30561467. The next prime is 30561473. The reversal of 30561472 is 27416503.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30561472.

It is not an unprimeable number, because it can be changed into a prime (30561473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238698 + ... + 238825.

Almost surely, 2^30561472 is an apocalyptic number.

30561472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30561472 is a deficient number, since it is larger than the sum of its proper divisors (30084076).

30561472 is an equidigital number, since it uses as much as digits as its factorization.

30561472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477535 (or 477525 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 30561472 is about 5528.2431205583. The cubic root of 30561472 is about 312.6497526525.

Adding to 30561472 its reverse (27416503), we get a palindrome (57977975).

The spelling of 30561472 in words is "thirty million, five hundred sixty-one thousand, four hundred seventy-two".