23218797 has 12 divisors (see below), whose sum is σ = 36013056. Its totient is φ = 13267800.

The previous prime is 23218777. The next prime is 23218813. The reversal of 23218797 is 79781232.

It is not a de Polignac number, because 23218797 - 2⁶ = 23218733 is a prime.

It is a super-2 number, since 2×23218797² = 1078225068254418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23218747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78829 + ... + 79122.

It is an arithmetic number, because the mean of its divisors is an integer number (3001088).

Almost surely, 2^23218797 is an apocalyptic number.

It is an amenable number.

23218797 is a deficient number, since it is larger than the sum of its proper divisors (12794259).

23218797 is a wasteful number, since it uses less digits than its factorization.

23218797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157968 (or 157961 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 23218797 is about 4818.5886937982. The cubic root of 23218797 is about 285.2856354541.

The spelling of 23218797 in words is "twenty-three million, two hundred eighteen thousand, seven hundred ninety-seven".