28746243 has 12 divisors (see below), whose sum is σ = 41904720. Its totient is φ = 18987696.

The previous prime is 28746209. The next prime is 28746253. The reversal of 28746243 is 34264782.

28746243 is a `hidden beast` number, since 28 + 7 + 4 + 624 + 3 = 666.

It is not a de Polignac number, because 28746243 - 2⁸ = 28745987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28746198 and 28746207.

It is not an unprimeable number, because it can be changed into a prime (28746253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13671 + ... + 15632.

It is an arithmetic number, because the mean of its divisors is an integer number (3492060).

Almost surely, 2^28746243 is an apocalyptic number.

28746243 is a deficient number, since it is larger than the sum of its proper divisors (13158477).

28746243 is a wasteful number, since it uses less digits than its factorization.

28746243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29418 (or 29415 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 28746243 is about 5361.5522938791. The cubic root of 28746243 is about 306.3329389136.

The spelling of 28746243 in words is "twenty-eight million, seven hundred forty-six thousand, two hundred forty-three".