30461564 has 24 divisors (see below), whose sum is σ = 61097568. Its totient is φ = 13017600.

The previous prime is 30461521. The next prime is 30461567. The reversal of 30461564 is 46516403.

It is a happy number.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30461567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9872 + ... + 12584.

It is an arithmetic number, because the mean of its divisors is an integer number (2545732).

Almost surely, 2^30461564 is an apocalyptic number.

It is an amenable number.

30461564 is an abundant number, since it is smaller than the sum of its proper divisors (30636004).

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

30461564 is a wasteful number, since it uses less digits than its factorization.

30461564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125 (or 3123 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 30461564 is about 5519.1995796492. The cubic root of 30461564 is about 312.3086880230.

Adding to 30461564 its reverse (46516403), we get a palindrome (76977967).

The spelling of 30461564 in words is "thirty million, four hundred sixty-one thousand, five hundred sixty-four".