83218782 has 16 divisors (see below), whose sum is σ = 167749632. Its totient is φ = 27520920.

The previous prime is 83218771. The next prime is 83218783. The reversal of 83218782 is 28781238.

It is a self number, because there is not a number n which added to its sum of digits gives 83218782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83218783) 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, 53844 + ... + 55367.

It is an arithmetic number, because the mean of its divisors is an integer number (10484352).

Almost surely, 2^83218782 is an apocalyptic number.

83218782 is an abundant number, since it is smaller than the sum of its proper divisors (84530850).

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

83218782 is a wasteful number, since it uses less digits than its factorization.

83218782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109343.

The product of its digits is 43008, while the sum is 39.

The square root of 83218782 is about 9122.4328991777. The cubic root of 83218782 is about 436.5900009790.

The spelling of 83218782 in words is "eighty-three million, two hundred eighteen thousand, seven hundred eighty-two".