23278071 has 4 divisors (see below), whose sum is σ = 31037432. Its totient is φ = 15518712.

The previous prime is 23278067. The next prime is 23278091. The reversal of 23278071 is 17087232.

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

It is not a de Polignac number, because 23278071 - 2² = 23278067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23278091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3879676 + ... + 3879681.

It is an arithmetic number, because the mean of its divisors is an integer number (7759358).

Almost surely, 2^23278071 is an apocalyptic number.

23278071 is a deficient number, since it is larger than the sum of its proper divisors (7759361).

23278071 is an equidigital number, since it uses as much as digits as its factorization.

23278071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7759360.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 23278071 is about 4824.7353295284. The cubic root of 23278071 is about 285.5281925452.

The spelling of 23278071 in words is "twenty-three million, two hundred seventy-eight thousand, seventy-one".