82781734 has 16 divisors (see below), whose sum is σ = 142106400. Its totient is φ = 35429184.

The previous prime is 82781731. The next prime is 82781737. The reversal of 82781734 is 43718728.

It is an interprime number because it is at equal distance from previous prime (82781731) and next prime (82781737).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82781731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7672 + ... + 14980.

It is an arithmetic number, because the mean of its divisors is an integer number (8881650).

Almost surely, 2^82781734 is an apocalyptic number.

82781734 is a deficient number, since it is larger than the sum of its proper divisors (59324666).

82781734 is a wasteful number, since it uses less digits than its factorization.

82781734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127.

The product of its digits is 75264, while the sum is 40.

The square root of 82781734 is about 9098.4467905242. The cubic root of 82781734 is about 435.8243653327.

The spelling of 82781734 in words is "eighty-two million, seven hundred eighty-one thousand, seven hundred thirty-four".