82386978 has 8 divisors (see below), whose sum is σ = 164773968. Its totient is φ = 27462324.

The previous prime is 82386977. The next prime is 82386979. The reversal of 82386978 is 87968328.

It is an interprime number because it is at equal distance from previous prime (82386977) and next prime (82386979).

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

82386978 is an admirable number.

It is a super-2 number, since 2×82386978² = 13575228287944968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82386978.

It is not an unprimeable number, because it can be changed into a prime (82386971) 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, 6865576 + ... + 6865587.

It is an arithmetic number, because the mean of its divisors is an integer number (20596746).

Almost surely, 2^82386978 is an apocalyptic number.

82386978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

82386978 is a wasteful number, since it uses less digits than its factorization.

82386978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13731168.

The product of its digits is 1161216, while the sum is 51.

The square root of 82386978 is about 9076.7272736378. The cubic root of 82386978 is about 435.1304985666.

The spelling of 82386978 in words is "eighty-two million, three hundred eighty-six thousand, nine hundred seventy-eight".