28839087 has 12 divisors (see below), whose sum is σ = 41740504. Its totient is φ = 19187280.

The previous prime is 28839071. The next prime is 28839103. The reversal of 28839087 is 78093882.

It is an interprime number because it is at equal distance from previous prime (28839071) and next prime (28839103).

It is not a de Polignac number, because 28839087 - 2⁴ = 28839071 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 (28839047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1908 + ... + 7830.

Almost surely, 2^28839087 is an apocalyptic number.

28839087 is a deficient number, since it is larger than the sum of its proper divisors (12901417).

28839087 is a wasteful number, since it uses less digits than its factorization.

28839087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470 (or 6467 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 28839087 is about 5370.2036274242. The cubic root of 28839087 is about 306.6623803486.

The spelling of 28839087 in words is "twenty-eight million, eight hundred thirty-nine thousand, eighty-seven".