82531786 has 8 divisors (see below), whose sum is σ = 124078464. Its totient is φ = 41172300.

The previous prime is 82531783. The next prime is 82531789. The reversal of 82531786 is 68713528.

It is an interprime number because it is at equal distance from previous prime (82531783) and next prime (82531789).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×82531786² = 13622991400699592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82531783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45690 + ... + 47461.

It is an arithmetic number, because the mean of its divisors is an integer number (15509808).

Almost surely, 2^82531786 is an apocalyptic number.

82531786 is a deficient number, since it is larger than the sum of its proper divisors (41546678).

82531786 is a wasteful number, since it uses less digits than its factorization.

82531786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93596.

The product of its digits is 80640, while the sum is 40.

The square root of 82531786 is about 9084.7006554977. The cubic root of 82531786 is about 435.3852859853.

The spelling of 82531786 in words is "eighty-two million, five hundred thirty-one thousand, seven hundred eighty-six".