82961540 has 12 divisors (see below), whose sum is σ = 174219276. Its totient is φ = 33184608.

The previous prime is 82961539. The next prime is 82961551. The reversal of 82961540 is 4516928.

It can be written as a sum of positive squares in 2 ways, for example, as 12166144 + 70795396 = 3488^2 + 8414^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 82961540.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2074019 + ... + 2074058.

It is an arithmetic number, because the mean of its divisors is an integer number (14518273).

Almost surely, 2^82961540 is an apocalyptic number.

It is an amenable number.

82961540 is an abundant number, since it is smaller than the sum of its proper divisors (91257736).

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

82961540 is a wasteful number, since it uses less digits than its factorization.

82961540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148086 (or 4148084 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 82961540 is about 9108.3225678497. The cubic root of 82961540 is about 436.1396811385.

The spelling of 82961540 in words is "eighty-two million, nine hundred sixty-one thousand, five hundred forty".