23240146 has 16 divisors (see below), whose sum is σ = 35944128. Its totient is φ = 11264400.

The previous prime is 23240131. The next prime is 23240149. The reversal of 23240146 is 64104232.

It is a happy number.

It is a super-2 number, since 2×23240146² = 1080208772202632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23240149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7321 + ... + 10003.

It is an arithmetic number, because the mean of its divisors is an integer number (2246508).

Almost surely, 2^23240146 is an apocalyptic number.

23240146 is a deficient number, since it is larger than the sum of its proper divisors (12703982).

23240146 is a wasteful number, since it uses less digits than its factorization.

23240146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 23240146 is about 4820.8034600054. The cubic root of 23240146 is about 285.3730459157.

Adding to 23240146 its reverse (64104232), we get a palindrome (87344378).

The spelling of 23240146 in words is "twenty-three million, two hundred forty thousand, one hundred forty-six".