28088567 has 16 divisors (see below), whose sum is σ = 31281600. Its totient is φ = 25056000.

The previous prime is 28088561. The next prime is 28088623. The reversal of 28088567 is 76588082.

It is a cyclic number.

It is not a de Polignac number, because 28088567 - 2¹² = 28084471 is a prime.

It is a super-2 number, since 2×28088567² = 1577935192226978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28088561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80309 + ... + 80657.

It is an arithmetic number, because the mean of its divisors is an integer number (1955100).

Almost surely, 2^28088567 is an apocalyptic number.

28088567 is a deficient number, since it is larger than the sum of its proper divisors (3193033).

28088567 is a wasteful number, since it uses less digits than its factorization.

28088567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 28088567 is about 5299.8648095966. The cubic root of 28088567 is about 303.9787287460.

The spelling of 28088567 in words is "twenty-eight million, eighty-eight thousand, five hundred sixty-seven".