23218072 has 8 divisors (see below), whose sum is σ = 43533900. Its totient is φ = 11609032.

The previous prime is 23218051. The next prime is 23218121. The reversal of 23218072 is 27081232.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1451122 + ... + 1451137.

Almost surely, 2^23218072 is an apocalyptic number.

It is an amenable number.

23218072 is a deficient number, since it is larger than the sum of its proper divisors (20315828).

23218072 is a wasteful number, since it uses less digits than its factorization.

23218072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902265 (or 2902261 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 23218072 is about 4818.5134637147. The cubic root of 23218072 is about 285.2826661037.

The spelling of 23218072 in words is "twenty-three million, two hundred eighteen thousand, seventy-two".