23278238 has 8 divisors (see below), whose sum is σ = 34938000. Its totient is φ = 11632240.

The previous prime is 23278223. The next prime is 23278243. The reversal of 23278238 is 83287232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 23278198 and 23278207.

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 in 3 ways as a sum of consecutive naturals, for example, 4058 + ... + 7938.

It is an arithmetic number, because the mean of its divisors is an integer number (4367250).

Almost surely, 2^23278238 is an apocalyptic number.

23278238 is a deficient number, since it is larger than the sum of its proper divisors (11659762).

23278238 is a wasteful number, since it uses less digits than its factorization.

23278238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882.

The product of its digits is 32256, while the sum is 35.

The square root of 23278238 is about 4824.7526361462. The cubic root of 23278238 is about 285.5288753494.

The spelling of 23278238 in words is "twenty-three million, two hundred seventy-eight thousand, two hundred thirty-eight".