28053587 has 8 divisors (see below), whose sum is σ = 30395376. Its totient is φ = 25788672.

The previous prime is 28053577. The next prime is 28053607. The reversal of 28053587 is 78535082.

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 28053587 - 2⁸ = 28053331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28053587.

It is not an unprimeable number, because it can be changed into a prime (28053547) 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, 18458 + ... + 19919.

It is an arithmetic number, because the mean of its divisors is an integer number (3799422).

Almost surely, 2^28053587 is an apocalyptic number.

28053587 is a deficient number, since it is larger than the sum of its proper divisors (2341789).

28053587 is a wasteful number, since it uses less digits than its factorization.

28053587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38437.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 28053587 is about 5296.5636973419. The cubic root of 28053587 is about 303.8524900408.

The spelling of 28053587 in words is "twenty-eight million, fifty-three thousand, five hundred eighty-seven".