23240442 has 16 divisors (see below), whose sum is σ = 48502080. Its totient is φ = 7409952.

The previous prime is 23240429. The next prime is 23240443. The reversal of 23240442 is 24404232.

It is not an unprimeable number, because it can be changed into a prime (23240443) 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, 84067 + ... + 84342.

It is an arithmetic number, because the mean of its divisors is an integer number (3031380).

Almost surely, 2^23240442 is an apocalyptic number.

23240442 is an abundant number, since it is smaller than the sum of its proper divisors (25261638).

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

23240442 is a wasteful number, since it uses less digits than its factorization.

23240442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168437.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 23240442 is about 4820.8341601843. The cubic root of 23240442 is about 285.3742574695.

Adding to 23240442 its reverse (24404232), we get a palindrome (47644674).

The spelling of 23240442 in words is "twenty-three million, two hundred forty thousand, four hundred forty-two".