23540642 has 16 divisors (see below), whose sum is σ = 36523872. Its totient is φ = 11371680.

The previous prime is 23540641. The next prime is 23540653. The reversal of 23540642 is 24604532.

23540642 is nontrivially palindromic in base 15.

It is not an unprimeable number, because it can be changed into a prime (23540641) 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, 7433 + ... + 10115.

It is an arithmetic number, because the mean of its divisors is an integer number (2282742).

Almost surely, 2^23540642 is an apocalyptic number.

23540642 is a deficient number, since it is larger than the sum of its proper divisors (12983230).

23540642 is a wasteful number, since it uses less digits than its factorization.

23540642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 23540642 is about 4851.8699487929. The cubic root of 23540642 is about 286.5977440818.

The spelling of 23540642 in words is "twenty-three million, five hundred forty thousand, six hundred forty-two".