28571283 has 12 divisors (see below), whose sum is σ = 44444400. Its totient is φ = 17582256.

The previous prime is 28571239. The next prime is 28571287. The reversal of 28571283 is 38217582.

28571283 is a `hidden beast` number, since 2 + 8 + 571 + 2 + 83 = 666.

It is not a de Polignac number, because 28571283 - 2¹⁶ = 28505747 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28571287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121983 + ... + 122216.

It is an arithmetic number, because the mean of its divisors is an integer number (3703700).

Almost surely, 2^28571283 is an apocalyptic number.

28571283 is a deficient number, since it is larger than the sum of its proper divisors (15873117).

28571283 is a wasteful number, since it uses less digits than its factorization.

28571283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244218 (or 244215 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 28571283 is about 5345.2112212709. The cubic root of 28571283 is about 305.7101895333.

The spelling of 28571283 in words is "twenty-eight million, five hundred seventy-one thousand, two hundred eighty-three".