23043140 has 12 divisors (see below), whose sum is σ = 48390636. Its totient is φ = 9217248.

The previous prime is 23043103. The next prime is 23043149. The reversal of 23043140 is 4134032.

It can be written as a sum of positive squares in 2 ways, for example, as 2829124 + 20214016 = 1682^2 + 4496^2 .

It is not an unprimeable number, because it can be changed into a prime (23043149) 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 3 ways as a sum of consecutive naturals, for example, 576059 + ... + 576098.

It is an arithmetic number, because the mean of its divisors is an integer number (4032553).

Almost surely, 2^23043140 is an apocalyptic number.

23043140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23043140 is an abundant number, since it is smaller than the sum of its proper divisors (25347496).

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

23043140 is a wasteful number, since it uses less digits than its factorization.

23043140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152166 (or 1152164 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 23043140 is about 4800.3270721900. The cubic root of 23043140 is about 284.5643904444.

Adding to 23043140 its reverse (4134032), we get a palindrome (27177172).

The spelling of 23043140 in words is "twenty-three million, forty-three thousand, one hundred forty".