23641140 has 24 divisors (see below), whose sum is σ = 66195360. Its totient is φ = 6304288.

The previous prime is 23641129. The next prime is 23641147. The reversal of 23641140 is 4114632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23641147) 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, 196950 + ... + 197069.

It is an arithmetic number, because the mean of its divisors is an integer number (2758140).

Almost surely, 2^23641140 is an apocalyptic number.

23641140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23641140 is an abundant number, since it is smaller than the sum of its proper divisors (42554220).

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

23641140 is a wasteful number, since it uses less digits than its factorization.

23641140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394031 (or 394029 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 23641140 is about 4862.2155443789. The cubic root of 23641140 is about 287.0050058413.

Adding to 23641140 its reverse (4114632), we get a palindrome (27755772).

The spelling of 23641140 in words is "twenty-three million, six hundred forty-one thousand, one hundred forty".