83218228 has 12 divisors (see below), whose sum is σ = 145980772. Its totient is φ = 41509440.

The previous prime is 83218211. The next prime is 83218237. The reversal of 83218228 is 82281238.

It can be written as a sum of positive squares in 2 ways, for example, as 35497764 + 47720464 = 5958^2 + 6908^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 83218193 and 83218202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23025 + ... + 26392.

Almost surely, 2^83218228 is an apocalyptic number.

It is an amenable number.

83218228 is a deficient number, since it is larger than the sum of its proper divisors (62762544).

83218228 is a wasteful number, since it uses less digits than its factorization.

83218228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49842 (or 49840 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 83218228 is about 9122.4025344204. The cubic root of 83218228 is about 436.5890321617.

The spelling of 83218228 in words is "eighty-three million, two hundred eighteen thousand, two hundred twenty-eight".