23278338 has 48 divisors (see below), whose sum is σ = 53913600. Its totient is φ = 7233408.

The previous prime is 23278327. The next prime is 23278373. The reversal of 23278338 is 83387232.

It is a Curzon 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, 38563 + ... + 39161.

It is an arithmetic number, because the mean of its divisors is an integer number (1123200).

Almost surely, 2^23278338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23278338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26956800).

23278338 is an abundant number, since it is smaller than the sum of its proper divisors (30635262).

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

23278338 is a wasteful number, since it uses less digits than its factorization.

23278338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 748 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 23278338 is about 4824.7629993607. The cubic root of 23278338 is about 285.5292842126.

The spelling of 23278338 in words is "twenty-three million, two hundred seventy-eight thousand, three hundred thirty-eight".