23871140 has 12 divisors (see below), whose sum is σ = 50129436. Its totient is φ = 9548448.

The previous prime is 23871139. The next prime is 23871157. The reversal of 23871140 is 4117832.

It can be written as a sum of positive squares in 2 ways, for example, as 16859236 + 7011904 = 4106^2 + 2648^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 596759 + ... + 596798.

It is an arithmetic number, because the mean of its divisors is an integer number (4177453).

Almost surely, 2^23871140 is an apocalyptic number.

23871140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23871140 is an abundant number, since it is smaller than the sum of its proper divisors (26258296).

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

23871140 is a wasteful number, since it uses less digits than its factorization.

23871140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193566 (or 1193564 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 23871140 is about 4885.8100658949. The cubic root of 23871140 is about 287.9327421389.

Adding to 23871140 its reverse (4117832), we get a palindrome (27988972).

The spelling of 23871140 in words is "twenty-three million, eight hundred seventy-one thousand, one hundred forty".