23478787 has 2 divisors, whose sum is σ = 23478788. Its totient is φ = 23478786.

The previous prime is 23478781. The next prime is 23478809. The reversal of 23478787 is 78787432.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23478787 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (23478781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11739393 + 11739394.

It is an arithmetic number, because the mean of its divisors is an integer number (11739394).

Almost surely, 2^23478787 is an apocalyptic number.

23478787 is a deficient number, since it is larger than the sum of its proper divisors (1).

23478787 is an equidigital number, since it uses as much as digits as its factorization.

23478787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 526848, while the sum is 46.

The square root of 23478787 is about 4845.4914095476. The cubic root of 23478787 is about 286.3465040775.

The spelling of 23478787 in words is "twenty-three million, four hundred seventy-eight thousand, seven hundred eighty-seven".