23561140 has 24 divisors (see below), whose sum is σ = 52083360. Its totient is φ = 8928288.

The previous prime is 23561129. The next prime is 23561141. The reversal of 23561140 is 4116532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23561141) 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 7 ways as a sum of consecutive naturals, for example, 30622 + ... + 31381.

It is an arithmetic number, because the mean of its divisors is an integer number (2170140).

Almost surely, 2^23561140 is an apocalyptic number.

23561140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23561140 is an abundant number, since it is smaller than the sum of its proper divisors (28522220).

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

23561140 is a wasteful number, since it uses less digits than its factorization.

23561140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62031 (or 62029 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 23561140 is about 4853.9818705883. The cubic root of 23561140 is about 286.6809048874.

Adding to 23561140 its reverse (4116532), we get a palindrome (27677672).

The spelling of 23561140 in words is "twenty-three million, five hundred sixty-one thousand, one hundred forty".