30561264 has 60 divisors (see below), whose sum is σ = 86593416. Its totient is φ = 10060416.

The previous prime is 30561263. The next prime is 30561269. The reversal of 30561264 is 46216503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30561263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10674 + ... + 13230.

Almost surely, 2^30561264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30561264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43296708).

30561264 is an abundant number, since it is smaller than the sum of its proper divisors (56032152).

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

30561264 is a wasteful number, since it uses less digits than its factorization.

30561264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654 (or 2645 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 30561264 is about 5528.2243080396. The cubic root of 30561264 is about 312.6490433575.

Adding to 30561264 its reverse (46216503), we get a palindrome (76777767).

The spelling of 30561264 in words is "thirty million, five hundred sixty-one thousand, two hundred sixty-four".