23278411 has 4 divisors (see below), whose sum is σ = 25069072. Its totient is φ = 21487752.

The previous prime is 23278403. The next prime is 23278417. The reversal of 23278411 is 11487232.

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

It is not a de Polignac number, because 23278411 - 2³ = 23278403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23278411.

It is not an unprimeable number, because it can be changed into a prime (23278417) 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, 895311 + ... + 895336.

It is an arithmetic number, because the mean of its divisors is an integer number (6267268).

Almost surely, 2^23278411 is an apocalyptic number.

23278411 is a deficient number, since it is larger than the sum of its proper divisors (1790661).

23278411 is a wasteful number, since it uses less digits than its factorization.

23278411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790660.

The product of its digits is 2688, while the sum is 28.

The square root of 23278411 is about 4824.7705644932. The cubic root of 23278411 is about 285.5295826820.

The spelling of 23278411 in words is "twenty-three million, two hundred seventy-eight thousand, four hundred eleven".