28798587 has 6 divisors (see below), whose sum is σ = 41597972. Its totient is φ = 19199052.

The previous prime is 28798579. The next prime is 28798603. The reversal of 28798587 is 78589782.

It is not a de Polignac number, because 28798587 - 2³ = 28798579 is a prime.

It is a super-2 number, since 2×28798587² = 1658717226393138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28798487) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1599913 + ... + 1599930.

Almost surely, 2^28798587 is an apocalyptic number.

28798587 is a deficient number, since it is larger than the sum of its proper divisors (12799385).

28798587 is a wasteful number, since it uses less digits than its factorization.

28798587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199849 (or 3199846 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The square root of 28798587 is about 5366.4314958825. The cubic root of 28798587 is about 306.5187599346.

The spelling of 28798587 in words is "twenty-eight million, seven hundred ninety-eight thousand, five hundred eighty-seven".