82878317 has 8 divisors (see below), whose sum is σ = 85847040. Its totient is φ = 79917040.

The previous prime is 82878311. The next prime is 82878319. The reversal of 82878317 is 71387828.

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

It is not a de Polignac number, because 82878317 - 2¹⁰ = 82877293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82878311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30692 + ... + 33282.

It is an arithmetic number, because the mean of its divisors is an integer number (10730880).

Almost surely, 2^82878317 is an apocalyptic number.

It is an amenable number.

82878317 is a deficient number, since it is larger than the sum of its proper divisors (2968723).

82878317 is a wasteful number, since it uses less digits than its factorization.

82878317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723.

The product of its digits is 150528, while the sum is 44.

The square root of 82878317 is about 9103.7529074553. The cubic root of 82878317 is about 435.9937942752.

The spelling of 82878317 in words is "eighty-two million, eight hundred seventy-eight thousand, three hundred seventeen".