82261000 has 32 divisors (see below), whose sum is σ = 192493080. Its totient is φ = 32904000.

The previous prime is 82260991. The next prime is 82261033. The reversal of 82261000 is 16228.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8678916 + 73582084 = 2946^2 + 8578^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40131 + ... + 42130.

Almost surely, 2^82261000 is an apocalyptic number.

It is an amenable number.

82261000 is an abundant number, since it is smaller than the sum of its proper divisors (110232080).

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

82261000 is a wasteful number, since it uses less digits than its factorization.

82261000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82282 (or 82268 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 82261000 is about 9069.7850029645. The cubic root of 82261000 is about 434.9085992842.

Adding to 82261000 its reverse (16228), we get a palindrome (82277228).

The spelling of 82261000 in words is "eighty-two million, two hundred sixty-one thousand".