23278956 has 12 divisors (see below), whose sum is σ = 54317592. Its totient is φ = 7759648.

The previous prime is 23278951. The next prime is 23278963. The reversal of 23278956 is 65987232.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (23278951) 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 3 ways as a sum of consecutive naturals, for example, 969945 + ... + 969968.

It is an arithmetic number, because the mean of its divisors is an integer number (4526466).

Almost surely, 2^23278956 is an apocalyptic number.

It is an amenable number.

23278956 is an abundant number, since it is smaller than the sum of its proper divisors (31038636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23278956 is a wasteful number, since it uses less digits than its factorization.

23278956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939920 (or 1939918 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 23278956 is about 4824.8270435322. The cubic root of 23278956 is about 285.5318109614.

The spelling of 23278956 in words is "twenty-three million, two hundred seventy-eight thousand, nine hundred fifty-six".