23278964 has 6 divisors (see below), whose sum is σ = 40738194. Its totient is φ = 11639480.

The previous prime is 23278963. The next prime is 23278987. The reversal of 23278964 is 46987232.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14822500 + 8456464 = 3850^2 + 2908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23278963) 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 as a sum of consecutive naturals, namely, 2909867 + ... + 2909874.

It is an arithmetic number, because the mean of its divisors is an integer number (6789699).

Almost surely, 2^23278964 is an apocalyptic number.

It is an amenable number.

23278964 is a deficient number, since it is larger than the sum of its proper divisors (17459230).

23278964 is a wasteful number, since it uses less digits than its factorization.

23278964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5819745 (or 5819743 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 23278964 is about 4824.8278725774. The cubic root of 23278964 is about 285.5318436698.

It can be divided in two parts, 23278 and 964, that added together give a palindrome (24242).

The spelling of 23278964 in words is "twenty-three million, two hundred seventy-eight thousand, nine hundred sixty-four".