28425243 has 24 divisors (see below), whose sum is σ = 48098880. Its totient is φ = 14765520.

The previous prime is 28425209. The next prime is 28425253. The reversal of 28425243 is 34252482.

It is not a de Polignac number, because 28425243 - 2⁶ = 28425179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28425243.

It is not an unprimeable number, because it can be changed into a prime (28425253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7173 + ... + 10406.

It is an arithmetic number, because the mean of its divisors is an integer number (2004120).

Almost surely, 2^28425243 is an apocalyptic number.

28425243 is a deficient number, since it is larger than the sum of its proper divisors (19673637).

28425243 is a wasteful number, since it uses less digits than its factorization.

28425243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17607 (or 17600 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 28425243 is about 5331.5328940184. The cubic root of 28425243 is about 305.1884278641.

The spelling of 28425243 in words is "twenty-eight million, four hundred twenty-five thousand, two hundred forty-three".