23456819 has 2 divisors, whose sum is σ = 23456820. Its totient is φ = 23456818.

The previous prime is 23456789. The next prime is 23456827. The reversal of 23456819 is 91865432.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23456819 is a prime.

It is a super-2 number, since 2×23456819² = 1100444715197522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23458819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11728409 + 11728410.

It is an arithmetic number, because the mean of its divisors is an integer number (11728410).

Almost surely, 2^23456819 is an apocalyptic number.

23456819 is a deficient number, since it is larger than the sum of its proper divisors (1).

23456819 is an equidigital number, since it uses as much as digits as its factorization.

23456819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 23456819 is about 4843.2240295076. The cubic root of 23456819 is about 286.2571692108.

The spelling of 23456819 in words is "twenty-three million, four hundred fifty-six thousand, eight hundred nineteen".