188428546 has 8 divisors (see below), whose sum is σ = 288656640. Its totient is φ = 92209668.

The previous prime is 188428519. The next prime is 188428547. The reversal of 188428546 is 645824881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 188428496 and 188428505.

It is not an unprimeable number, because it can be changed into a prime (188428547) 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, 1002186 + ... + 1002373.

It is an arithmetic number, because the mean of its divisors is an integer number (36082080).

Almost surely, 2^188428546 is an apocalyptic number.

188428546 is a deficient number, since it is larger than the sum of its proper divisors (100228094).

188428546 is a wasteful number, since it uses less digits than its factorization.

188428546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004608.

The product of its digits is 491520, while the sum is 46.

The square root of 188428546 is about 13726.9277698981. The cubic root of 188428546 is about 573.3003835249.

The spelling of 188428546 in words is "one hundred eighty-eight million, four hundred twenty-eight thousand, five hundred forty-six".