23143260 has 48 divisors (see below), whose sum is σ = 74059776. Its totient is φ = 5289792.

The previous prime is 23143259. The next prime is 23143261. The reversal of 23143260 is 6234132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23143259) and next prime (23143261).

It is a super-2 number, since 2×23143260² = 1071220966855200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23143261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27132 + ... + 27971.

It is an arithmetic number, because the mean of its divisors is an integer number (1542912).

Almost surely, 2^23143260 is an apocalyptic number.

23143260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23143260 is an abundant number, since it is smaller than the sum of its proper divisors (50916516).

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

23143260 is a wasteful number, since it uses less digits than its factorization.

23143260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55122 (or 55120 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 23143260 is about 4810.7442251693. The cubic root of 23143260 is about 284.9759290227.

Adding to 23143260 its reverse (6234132), we get a palindrome (29377392).

The spelling of 23143260 in words is "twenty-three million, one hundred forty-three thousand, two hundred sixty".