30561460 has 12 divisors (see below), whose sum is σ = 64179108. Its totient is φ = 12224576.

The previous prime is 30561431. The next prime is 30561467. The reversal of 30561460 is 6416503.

It can be written as a sum of positive squares in 2 ways, for example, as 7463824 + 23097636 = 2732^2 + 4806^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30561467) 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, 764017 + ... + 764056.

It is an arithmetic number, because the mean of its divisors is an integer number (5348259).

Almost surely, 2^30561460 is an apocalyptic number.

It is an amenable number.

30561460 is an abundant number, since it is smaller than the sum of its proper divisors (33617648).

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

30561460 is a wasteful number, since it uses less digits than its factorization.

30561460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528082 (or 1528080 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 30561460 is about 5528.2420352224. The cubic root of 30561460 is about 312.6497117317.

Adding to 30561460 its reverse (6416503), we get a palindrome (36977963).

The spelling of 30561460 in words is "thirty million, five hundred sixty-one thousand, four hundred sixty".