82637830 has 32 divisors (see below), whose sum is σ = 166053888. Its totient is φ = 29349600.

The previous prime is 82637809. The next prime is 82637831. The reversal of 82637830 is 3873628.

It is a self number, because there is not a number n which added to its sum of digits gives 82637830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82637831) 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 15 ways as a sum of consecutive naturals, for example, 4006 + ... + 13465.

It is an arithmetic number, because the mean of its divisors is an integer number (5189184).

Almost surely, 2^82637830 is an apocalyptic number.

82637830 is an abundant number, since it is smaller than the sum of its proper divisors (83416058).

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

82637830 is a wasteful number, since it uses less digits than its factorization.

82637830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17532.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 82637830 is about 9090.5351877653. The cubic root of 82637830 is about 435.5716797745.

The spelling of 82637830 in words is "eighty-two million, six hundred thirty-seven thousand, eight hundred thirty".