28055527 has 8 divisors (see below), whose sum is σ = 29220480. Its totient is φ = 26906880.

The previous prime is 28055483. The next prime is 28055539. The reversal of 28055527 is 72555082.

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 28055527 - 2¹¹ = 28053479 is a prime.

It is a super-2 number, since 2×28055527² = 1574225190495458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28055492 and 28055501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055327) 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, 502 + ... + 7507.

It is an arithmetic number, because the mean of its divisors is an integer number (3652560).

Almost surely, 2^28055527 is an apocalyptic number.

28055527 is a deficient number, since it is larger than the sum of its proper divisors (1164953).

28055527 is a wasteful number, since it uses less digits than its factorization.

28055527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8153.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 28055527 is about 5296.7468317827. The cubic root of 28055527 is about 303.8594940203.

It can be divided in two parts, 28055 and 527, that added together give a palindrome (28582).

The spelling of 28055527 in words is "twenty-eight million, fifty-five thousand, five hundred twenty-seven".