83402220 has 96 divisors (see below), whose sum is σ = 257354496. Its totient is φ = 20012800.

The previous prime is 83402197. The next prime is 83402239. The reversal of 83402220 is 2220438.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70030 + ... + 71210.

It is an arithmetic number, because the mean of its divisors is an integer number (2680776).

Almost surely, 2^83402220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83402220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128677248).

83402220 is an abundant number, since it is smaller than the sum of its proper divisors (173952276).

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

83402220 is a wasteful number, since it uses less digits than its factorization.

83402220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311 (or 1309 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 83402220 is about 9132.4815904550. The cubic root of 83402220 is about 436.9105553122.

Adding to 83402220 its reverse (2220438), we get a palindrome (85622658).

The spelling of 83402220 in words is "eighty-three million, four hundred two thousand, two hundred twenty".