23403156 has 24 divisors (see below), whose sum is σ = 62408640. Its totient is φ = 6686592.

The previous prime is 23403151. The next prime is 23403161. The reversal of 23403156 is 65130432.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23403151) and next prime (23403161).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23403151) 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 7 ways as a sum of consecutive naturals, for example, 139221 + ... + 139388.

It is an arithmetic number, because the mean of its divisors is an integer number (2600360).

Almost surely, 2^23403156 is an apocalyptic number.

It is an amenable number.

23403156 is an abundant number, since it is smaller than the sum of its proper divisors (39005484).

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

23403156 is a wasteful number, since it uses less digits than its factorization.

23403156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278623 (or 278621 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 23403156 is about 4837.6808493327. The cubic root of 23403156 is about 286.0387089602.

Adding to 23403156 its reverse (65130432), we get a palindrome (88533588).

The spelling of 23403156 in words is "twenty-three million, four hundred three thousand, one hundred fifty-six".