23453643 has 16 divisors (see below), whose sum is σ = 31968000. Its totient is φ = 15291360.

The previous prime is 23453641. The next prime is 23453653. The reversal of 23453643 is 34635432.

It is not a de Polignac number, because 23453643 - 2¹ = 23453641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23453643.

It is not an unprimeable number, because it can be changed into a prime (23453641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31368 + ... + 32106.

It is an arithmetic number, because the mean of its divisors is an integer number (1998000).

Almost surely, 2^23453643 is an apocalyptic number.

23453643 is a deficient number, since it is larger than the sum of its proper divisors (8514357).

23453643 is a wasteful number, since it uses less digits than its factorization.

23453643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962.

The product of its digits is 25920, while the sum is 30.

The square root of 23453643 is about 4842.8961376433. The cubic root of 23453643 is about 286.2442491042.

The spelling of 23453643 in words is "twenty-three million, four hundred fifty-three thousand, six hundred forty-three".