82427858 has 4 divisors (see below), whose sum is σ = 123641790. Its totient is φ = 41213928.

The previous prime is 82427857. The next prime is 82427887. The reversal of 82427858 is 85872428.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 76440049 + 5987809 = 8743^2 + 2447^2 .

It is not an unprimeable number, because it can be changed into a prime (82427857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20606963 + ... + 20606966.

Almost surely, 2^82427858 is an apocalyptic number.

82427858 is a deficient number, since it is larger than the sum of its proper divisors (41213932).

82427858 is a wasteful number, since it uses less digits than its factorization.

82427858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41213931.

The product of its digits is 286720, while the sum is 44.

The square root of 82427858 is about 9078.9789073442. The cubic root of 82427858 is about 435.2024565139.

It can be divided in two parts, 824 and 27858, that added together give a palindrome (28682).

The spelling of 82427858 in words is "eighty-two million, four hundred twenty-seven thousand, eight hundred fifty-eight".