28571075 has 12 divisors (see below), whose sum is σ = 38153808. Its totient is φ = 21098400.

The previous prime is 28571021. The next prime is 28571077. The reversal of 28571075 is 57017582.

It is not a de Polignac number, because 28571075 - 2¹⁶ = 28505539 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28571077) 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, 43631 + ... + 44280.

It is an arithmetic number, because the mean of its divisors is an integer number (3179484).

Almost surely, 2^28571075 is an apocalyptic number.

28571075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28571075 is a deficient number, since it is larger than the sum of its proper divisors (9582733).

28571075 is a wasteful number, since it uses less digits than its factorization.

28571075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87934 (or 87929 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 28571075 is about 5345.1917645675. The cubic root of 28571075 is about 305.7094476710.

The spelling of 28571075 in words is "twenty-eight million, five hundred seventy-one thousand, seventy-five".