82861544 has 32 divisors (see below), whose sum is σ = 159071040. Its totient is φ = 40454400.

The previous prime is 82861529. The next prime is 82861567. The reversal of 82861544 is 44516828.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 82861498 and 82861507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63539 + ... + 64829.

It is an arithmetic number, because the mean of its divisors is an integer number (4970970).

Almost surely, 2^82861544 is an apocalyptic number.

It is an amenable number.

82861544 is a deficient number, since it is larger than the sum of its proper divisors (76209496).

82861544 is a wasteful number, since it uses less digits than its factorization.

82861544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481 (or 1477 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 82861544 is about 9102.8316473502. The cubic root of 82861544 is about 435.9643799983.

The spelling of 82861544 in words is "eighty-two million, eight hundred sixty-one thousand, five hundred forty-four".