23057218 has 4 divisors (see below), whose sum is σ = 34585830. Its totient is φ = 11528608.

The previous prime is 23057183. The next prime is 23057227. The reversal of 23057218 is 81275032.

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

It can be written as a sum of positive squares in only one way, i.e., 22724289 + 332929 = 4767^2 + 577^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5764303 + ... + 5764306.

Almost surely, 2^23057218 is an apocalyptic number.

23057218 is a deficient number, since it is larger than the sum of its proper divisors (11528612).

23057218 is a wasteful number, since it uses less digits than its factorization.

23057218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11528611.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 23057218 is about 4801.7932067093. The cubic root of 23057218 is about 284.6223293355.

The spelling of 23057218 in words is "twenty-three million, fifty-seven thousand, two hundred eighteen".