23261278 has 4 divisors (see below), whose sum is σ = 34891920. Its totient is φ = 11630638.

The previous prime is 23261269. The next prime is 23261291. The reversal of 23261278 is 87216232.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 5815318 + ... + 5815321.

It is an arithmetic number, because the mean of its divisors is an integer number (8722980).

Almost surely, 2^23261278 is an apocalyptic number.

23261278 is a deficient number, since it is larger than the sum of its proper divisors (11630642).

23261278 is a wasteful number, since it uses less digits than its factorization.

23261278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11630641.

The product of its digits is 8064, while the sum is 31.

The square root of 23261278 is about 4822.9947128314. The cubic root of 23261278 is about 285.4595151990.

The spelling of 23261278 in words is "twenty-three million, two hundred sixty-one thousand, two hundred seventy-eight".