30561104 has 60 divisors (see below), whose sum is σ = 72962964. Its totient is φ = 12321792.

The previous prime is 30561067. The next prime is 30561119. The reversal of 30561104 is 40116503.

It can be written as a sum of positive squares in 2 ways, for example, as 16483600 + 14077504 = 4060^2 + 3752^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12182 + ... + 14474.

Almost surely, 2^30561104 is an apocalyptic number.

30561104 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30561104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36481482).

30561104 is an abundant number, since it is smaller than the sum of its proper divisors (42401860).

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

30561104 is a wasteful number, since it uses less digits than its factorization.

30561104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332 (or 2319 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 30561104 is about 5528.2098368278. The cubic root of 30561104 is about 312.6484977438.

Adding to 30561104 its reverse (40116503), we get a palindrome (70677607).

The spelling of 30561104 in words is "thirty million, five hundred sixty-one thousand, one hundred four".