82770534 has 144 divisors (see below), whose sum is σ = 231547680. Its totient is φ = 20908800.

The previous prime is 82770509. The next prime is 82770547. The reversal of 82770534 is 43507728.

It is a super-2 number, since 2×82770534² = 13701922597290312, which contains 22 as substring.

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 71 ways as a sum of consecutive naturals, for example, 929962 + ... + 930050.

It is an arithmetic number, because the mean of its divisors is an integer number (1607970).

Almost surely, 2^82770534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82770534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115773840).

82770534 is an abundant number, since it is smaller than the sum of its proper divisors (148777146).

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

82770534 is a wasteful number, since it uses less digits than its factorization.

82770534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 82770534 is about 9097.8312800359. The cubic root of 82770534 is about 435.8047094142.

The spelling of 82770534 in words is "eighty-two million, seven hundred seventy thousand, five hundred thirty-four".