23240156 has 24 divisors (see below), whose sum is σ = 43713936. Its totient is φ = 10771200.

The previous prime is 23240149. The next prime is 23240171. The reversal of 23240156 is 65104232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2006 + ... + 7106.

It is an arithmetic number, because the mean of its divisors is an integer number (1821414).

Almost surely, 2^23240156 is an apocalyptic number.

It is an amenable number.

23240156 is a deficient number, since it is larger than the sum of its proper divisors (20473780).

23240156 is a wasteful number, since it uses less digits than its factorization.

23240156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189 (or 5187 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23240156 is about 4820.8044971768. The cubic root of 23240156 is about 285.3730868467.

Adding to 23240156 its reverse (65104232), we get a palindrome (88344388).

The spelling of 23240156 in words is "twenty-three million, two hundred forty thousand, one hundred fifty-six".