23428186 has 4 divisors (see below), whose sum is σ = 35142282. Its totient is φ = 11714092.

The previous prime is 23428183. The next prime is 23428199. The reversal of 23428186 is 68182432.

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., 19527561 + 3900625 = 4419^2 + 1975^2 .

It is not an unprimeable number, because it can be changed into a prime (23428183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5857045 + ... + 5857048.

Almost surely, 2^23428186 is an apocalyptic number.

23428186 is a deficient number, since it is larger than the sum of its proper divisors (11714096).

23428186 is a wasteful number, since it uses less digits than its factorization.

23428186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11714095.

The product of its digits is 18432, while the sum is 34.

The square root of 23428186 is about 4840.2671413880. The cubic root of 23428186 is about 286.1406467500.

The spelling of 23428186 in words is "twenty-three million, four hundred twenty-eight thousand, one hundred eighty-six".