82736478 has 80 divisors (see below), whose sum is σ = 209349360. Its totient is φ = 24192000.

The previous prime is 82736471. The next prime is 82736519. The reversal of 82736478 is 87463728.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82736471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 50878 + ... + 52478.

It is an arithmetic number, because the mean of its divisors is an integer number (2616867).

Almost surely, 2^82736478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82736478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104674680).

82736478 is an abundant number, since it is smaller than the sum of its proper divisors (126612882).

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

82736478 is a wasteful number, since it uses less digits than its factorization.

82736478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655 (or 1646 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 82736478 is about 9095.9594326272. The cubic root of 82736478 is about 435.7449304869.

The spelling of 82736478 in words is "eighty-two million, seven hundred thirty-six thousand, four hundred seventy-eight".