23780779 has 16 divisors (see below), whose sum is σ = 27006336. Its totient is φ = 20750400.

The previous prime is 23780777. The next prime is 23780791. The reversal of 23780779 is 97708732.

It is not a de Polignac number, because 23780779 - 2¹ = 23780777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23780777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29824 + ... + 30610.

It is an arithmetic number, because the mean of its divisors is an integer number (1687896).

Almost surely, 2^23780779 is an apocalyptic number.

23780779 is a deficient number, since it is larger than the sum of its proper divisors (3225557).

23780779 is a wasteful number, since it uses less digits than its factorization.

23780779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 23780779 is about 4876.5540087238. The cubic root of 23780779 is about 287.5689724878.

The spelling of 23780779 in words is "twenty-three million, seven hundred eighty thousand, seven hundred seventy-nine".