23278258 has 8 divisors (see below), whose sum is σ = 35238060. Its totient is φ = 11532240.

The previous prime is 23278243. The next prime is 23278259. The reversal of 23278258 is 85287232.

It can be written as a sum of positive squares in 2 ways, for example, as 19918369 + 3359889 = 4463^2 + 1833^2 .

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

It is a super-4 number, since 4×23278258⁴ (a number of 31 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (23278259) 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, 53173 + ... + 53608.

Almost surely, 2^23278258 is an apocalyptic number.

23278258 is a deficient number, since it is larger than the sum of its proper divisors (11959802).

23278258 is a wasteful number, since it uses less digits than its factorization.

23278258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106892.

The product of its digits is 53760, while the sum is 37.

The square root of 23278258 is about 4824.7547087909. The cubic root of 23278258 is about 285.5289571221.

It can be divided in two parts, 2327 and 8258, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 23278258 in words is "twenty-three million, two hundred seventy-eight thousand, two hundred fifty-eight".