28425587 has 8 divisors (see below), whose sum is σ = 29258880. Its totient is φ = 27599040.

The previous prime is 28425569. The next prime is 28425601. The reversal of 28425587 is 78552482.

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

It is a cyclic number.

It is not a de Polignac number, because 28425587 - 2¹⁴ = 28409203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28425517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7589 + ... + 10697.

It is an arithmetic number, because the mean of its divisors is an integer number (3657360).

Almost surely, 2^28425587 is an apocalyptic number.

28425587 is a deficient number, since it is larger than the sum of its proper divisors (833293).

28425587 is a wasteful number, since it uses less digits than its factorization.

28425587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373.

The product of its digits is 179200, while the sum is 41.

The square root of 28425587 is about 5331.5651548115. The cubic root of 28425587 is about 305.1896589811.

The spelling of 28425587 in words is "twenty-eight million, four hundred twenty-five thousand, five hundred eighty-seven".