82867650 has 96 divisors (see below), whose sum is σ = 215986176. Its totient is φ = 21000000.

The previous prime is 82867637. The next prime is 82867657. The reversal of 82867650 is 5676828.

82867650 = 445² + 446² + ... + 695².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82867657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 330025 + ... + 330275.

It is an arithmetic number, because the mean of its divisors is an integer number (2249856).

Almost surely, 2^82867650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82867650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107993088).

82867650 is an abundant number, since it is smaller than the sum of its proper divisors (133118526).

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

82867650 is a wasteful number, since it uses less digits than its factorization.

82867650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 82867650 is about 9103.1670313139. The cubic root of 82867650 is about 435.9750883559.

The spelling of 82867650 in words is "eighty-two million, eight hundred sixty-seven thousand, six hundred fifty".