23278086 has 48 divisors (see below), whose sum is σ = 56085120. Its totient is φ = 6929280.

The previous prime is 23278067. The next prime is 23278091. The reversal of 23278086 is 68087232.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23278086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5650 + ... + 8858.

It is an arithmetic number, because the mean of its divisors is an integer number (1168440).

Almost surely, 2^23278086 is an apocalyptic number.

23278086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 23278086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28042560).

23278086 is an abundant number, since it is smaller than the sum of its proper divisors (32807034).

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

23278086 is a wasteful number, since it uses less digits than its factorization.

23278086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261 (or 3258 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 23278086 is about 4824.7368840176. The cubic root of 23278086 is about 285.5282538750.

The spelling of 23278086 in words is "twenty-three million, two hundred seventy-eight thousand, eighty-six".