23430156 has 24 divisors (see below), whose sum is σ = 55236720. Its totient is φ = 7729152.

The previous prime is 23430133. The next prime is 23430157. The reversal of 23430156 is 65103432.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23430157) 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, 8901 + ... + 11228.

It is an arithmetic number, because the mean of its divisors is an integer number (2301530).

Almost surely, 2^23430156 is an apocalyptic number.

It is an amenable number.

23430156 is an abundant number, since it is smaller than the sum of its proper divisors (31806564).

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

23430156 is a wasteful number, since it uses less digits than its factorization.

23430156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20233 (or 20231 counting only the distinct ones).

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

The square root of 23430156 is about 4840.4706382748. The cubic root of 23430156 is about 286.1486667375.

Adding to 23430156 its reverse (65103432), we get a palindrome (88533588).

The spelling of 23430156 in words is "twenty-three million, four hundred thirty thousand, one hundred fifty-six".