28055535 has 8 divisors (see below), whose sum is σ = 44888880. Its totient is φ = 14962944.

The previous prime is 28055483. The next prime is 28055539. The reversal of 28055535 is 53555082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28055535 - 2¹⁰ = 28054511 is a prime.

It is a super-2 number, since 2×28055535² = 1574226088272450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28055496 and 28055505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055539) 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, 935170 + ... + 935199.

It is an arithmetic number, because the mean of its divisors is an integer number (5611110).

Almost surely, 2^28055535 is an apocalyptic number.

28055535 is a deficient number, since it is larger than the sum of its proper divisors (16833345).

28055535 is a wasteful number, since it uses less digits than its factorization.

28055535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870377.

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 28055535 is about 5296.7475869632. The cubic root of 28055535 is about 303.8595229020.

The spelling of 28055535 in words is "twenty-eight million, fifty-five thousand, five hundred thirty-five".