82881534 has 32 divisors (see below), whose sum is σ = 175438080. Its totient is φ = 26030592.

The previous prime is 82881527. The next prime is 82881551. The reversal of 82881534 is 43518828.

It is a junction number, because it is equal to n+sod(n) for n = 82881492 and 82881501.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 20119 + ... + 23885.

It is an arithmetic number, because the mean of its divisors is an integer number (5482440).

Almost surely, 2^82881534 is an apocalyptic number.

82881534 is an abundant number, since it is smaller than the sum of its proper divisors (92556546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82881534 is a wasteful number, since it uses less digits than its factorization.

82881534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984.

The product of its digits is 61440, while the sum is 39.

The square root of 82881534 is about 9103.9295911161. The cubic root of 82881534 is about 435.9994353723. Note that the first 3 decimals are identical.

The spelling of 82881534 in words is "eighty-two million, eight hundred eighty-one thousand, five hundred thirty-four".