23007218 has 16 divisors (see below), whose sum is σ = 37244760. Its totient is φ = 10596096.

The previous prime is 23007203. The next prime is 23007221. The reversal of 23007218 is 81270032.

It can be written as a sum of positive squares in 4 ways, for example, as 17749369 + 5257849 = 4213^2 + 2293^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23007193 and 23007202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22298 + ... + 23306.

Almost surely, 2^23007218 is an apocalyptic number.

23007218 is a deficient number, since it is larger than the sum of its proper divisors (14237542).

23007218 is a wasteful number, since it uses less digits than its factorization.

23007218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 23007218 is about 4796.5839928015. The cubic root of 23007218 is about 284.4164441952.

The spelling of 23007218 in words is "twenty-three million, seven thousand, two hundred eighteen".