28255071 has 32 divisors (see below), whose sum is σ = 45239040. Its totient is φ = 15496704.

The previous prime is 28255057. The next prime is 28255103. The reversal of 28255071 is 17055282.

It is not a de Polignac number, because 28255071 - 2¹⁰ = 28254047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28255001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11476 + ... + 13718.

It is an arithmetic number, because the mean of its divisors is an integer number (1413720).

Almost surely, 2^28255071 is an apocalyptic number.

28255071 is a deficient number, since it is larger than the sum of its proper divisors (16983969).

28255071 is a wasteful number, since it uses less digits than its factorization.

28255071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 28255071 is about 5315.5499245139. The cubic root of 28255071 is about 304.5781896430.

The spelling of 28255071 in words is "twenty-eight million, two hundred fifty-five thousand, seventy-one".