23391646 has 4 divisors (see below), whose sum is σ = 35087472. Its totient is φ = 11695822.

The previous prime is 23391619. The next prime is 23391649. The reversal of 23391646 is 64619332.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23391649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5847910 + ... + 5847913.

It is an arithmetic number, because the mean of its divisors is an integer number (8771868).

Almost surely, 2^23391646 is an apocalyptic number.

23391646 is a deficient number, since it is larger than the sum of its proper divisors (11695826).

23391646 is a wasteful number, since it uses less digits than its factorization.

23391646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11695825.

The product of its digits is 23328, while the sum is 34.

The square root of 23391646 is about 4836.4910834199. The cubic root of 23391646 is about 285.9918086558.

The spelling of 23391646 in words is "twenty-three million, three hundred ninety-one thousand, six hundred forty-six".