28525842 has 24 divisors (see below), whose sum is σ = 64494144. Its totient is φ = 9095064.

The previous prime is 28525841. The next prime is 28525867. The reversal of 28525842 is 24852582.

28525842 is a `hidden beast` number, since 28 + 52 + 584 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28525797 and 28525806.

It is not an unprimeable number, because it can be changed into a prime (28525841) 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, 34038 + ... + 34865.

It is an arithmetic number, because the mean of its divisors is an integer number (2687256).

Almost surely, 2^28525842 is an apocalyptic number.

28525842 is an abundant number, since it is smaller than the sum of its proper divisors (35968302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28525842 is a wasteful number, since it uses less digits than its factorization.

28525842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68934 (or 68931 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

The square root of 28525842 is about 5340.9589026691. The cubic root of 28525842 is about 305.5480319813.

The spelling of 28525842 in words is "twenty-eight million, five hundred twenty-five thousand, eight hundred forty-two".