28425886 has 4 divisors (see below), whose sum is σ = 42638832. Its totient is φ = 14212942.

The previous prime is 28425883. The next prime is 28425959. The reversal of 28425886 is 68852482.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28425883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7106470 + ... + 7106473.

It is an arithmetic number, because the mean of its divisors is an integer number (10659708).

Almost surely, 2^28425886 is an apocalyptic number.

28425886 is a deficient number, since it is larger than the sum of its proper divisors (14212946).

28425886 is a wasteful number, since it uses less digits than its factorization.

28425886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14212945.

The product of its digits is 245760, while the sum is 43.

The square root of 28425886 is about 5331.5931952841. The cubic root of 28425886 is about 305.1907290427.

The spelling of 28425886 in words is "twenty-eight million, four hundred twenty-five thousand, eight hundred eighty-six".