84561140 has 24 divisors (see below), whose sum is σ = 178674720. Its totient is φ = 33615648.

The previous prime is 84561121. The next prime is 84561151. The reversal of 84561140 is 4116548.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9710 + ... + 16229.

It is an arithmetic number, because the mean of its divisors is an integer number (7444780).

Almost surely, 2^84561140 is an apocalyptic number.

It is an amenable number.

84561140 is an abundant number, since it is smaller than the sum of its proper divisors (94113580).

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

84561140 is a wasteful number, since it uses less digits than its factorization.

84561140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26111 (or 26109 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 84561140 is about 9195.7131316717. The cubic root of 84561140 is about 438.9249581589.

Adding to 84561140 its reverse (4116548), we get a palindrome (88677688).

The spelling of 84561140 in words is "eighty-four million, five hundred sixty-one thousand, one hundred forty".