83218830 has 32 divisors (see below), whose sum is σ = 208410624. Its totient is φ = 21226656.

The previous prime is 83218813. The next prime is 83218831. The reversal of 83218830 is 3881238.

It is a junction number, because it is equal to n+sod(n) for n = 83218791 and 83218800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83218831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59614 + ... + 60993.

It is an arithmetic number, because the mean of its divisors is an integer number (6512832).

Almost surely, 2^83218830 is an apocalyptic number.

83218830 is an abundant number, since it is smaller than the sum of its proper divisors (125191794).

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

83218830 is a wasteful number, since it uses less digits than its factorization.

83218830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120640.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 83218830 is about 9122.4355300545. The cubic root of 83218830 is about 436.5900849196.

It can be divided in two parts, 83218 and 830, that added together give a palindrome (84048).

The spelling of 83218830 in words is "eighty-three million, two hundred eighteen thousand, eight hundred thirty".