23420777 has 4 divisors (see below), whose sum is σ = 24228420. Its totient is φ = 22613136.

The previous prime is 23420773. The next prime is 23420783. The reversal of 23420777 is 77702432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7268416 + 16152361 = 2696^2 + 4019^2 .

It is a cyclic number.

It is not a de Polignac number, because 23420777 - 2² = 23420773 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23420773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403778 + ... + 403835.

It is an arithmetic number, because the mean of its divisors is an integer number (6057105).

Almost surely, 2^23420777 is an apocalyptic number.

It is an amenable number.

23420777 is a deficient number, since it is larger than the sum of its proper divisors (807643).

23420777 is an equidigital number, since it uses as much as digits as its factorization.

23420777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807642.

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 23420777 is about 4839.5017305504. The cubic root of 23420777 is about 286.1104802435.

The spelling of 23420777 in words is "twenty-three million, four hundred twenty thousand, seven hundred seventy-seven".