23670778 has 4 divisors (see below), whose sum is σ = 35506170. Its totient is φ = 11835388.

The previous prime is 23670737. The next prime is 23670793. The reversal of 23670778 is 87707632.

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

It can be written as a sum of positive squares in only one way, i.e., 22781529 + 889249 = 4773^2 + 943^2 .

It is a super-2 number, since 2×23670778² = 1120611462250568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 23670778.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5917693 + ... + 5917696.

Almost surely, 2^23670778 is an apocalyptic number.

23670778 is a deficient number, since it is larger than the sum of its proper divisors (11835392).

23670778 is a wasteful number, since it uses less digits than its factorization.

23670778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11835391.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 23670778 is about 4865.2623773030. The cubic root of 23670778 is about 287.1248915177.

The spelling of 23670778 in words is "twenty-three million, six hundred seventy thousand, seven hundred seventy-eight".