28587773 has 8 divisors (see below), whose sum is σ = 29136576. Its totient is φ = 28044000.

The previous prime is 28587751. The next prime is 28587787. The reversal of 28587773 is 37778582.

It is a happy number.

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 28587773 - 2⁶ = 28587709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28587073) 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, 11393 + ... + 13673.

It is an arithmetic number, because the mean of its divisors is an integer number (3642072).

Almost surely, 2^28587773 is an apocalyptic number.

It is an amenable number.

28587773 is a deficient number, since it is larger than the sum of its proper divisors (548803).

28587773 is a wasteful number, since it uses less digits than its factorization.

28587773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515.

The product of its digits is 658560, while the sum is 47.

The square root of 28587773 is about 5346.7535009574. The cubic root of 28587773 is about 305.7689920670.

The spelling of 28587773 in words is "twenty-eight million, five hundred eighty-seven thousand, seven hundred seventy-three".