82857265 has 16 divisors (see below), whose sum is σ = 102965760. Its totient is φ = 63941760.

The previous prime is 82857253. The next prime is 82857277. The reversal of 82857265 is 56275828.

It is an interprime number because it is at equal distance from previous prime (82857253) and next prime (82857277).

It is not a de Polignac number, because 82857265 - 2¹¹ = 82855217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62742 + ... + 64048.

It is an arithmetic number, because the mean of its divisors is an integer number (6435360).

Almost surely, 2^82857265 is an apocalyptic number.

It is an amenable number.

82857265 is a deficient number, since it is larger than the sum of its proper divisors (20108495).

82857265 is a wasteful number, since it uses less digits than its factorization.

82857265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752.

The product of its digits is 268800, while the sum is 43.

The square root of 82857265 is about 9102.5966075620. The cubic root of 82857265 is about 435.9568754166.

The spelling of 82857265 in words is "eighty-two million, eight hundred fifty-seven thousand, two hundred sixty-five".