83423220 has 24 divisors (see below), whose sum is σ = 233585184. Its totient is φ = 22246176.

The previous prime is 83423209. The next prime is 83423239. The reversal of 83423220 is 2232438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695134 + ... + 695253.

It is an arithmetic number, because the mean of its divisors is an integer number (9732716).

Almost surely, 2^83423220 is an apocalyptic number.

It is an amenable number.

83423220 is an abundant number, since it is smaller than the sum of its proper divisors (150161964).

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

83423220 is a wasteful number, since it uses less digits than its factorization.

83423220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390399 (or 1390397 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 83423220 is about 9133.6312603477. The cubic root of 83423220 is about 436.9472224085.

Adding to 83423220 its reverse (2232438), we get a palindrome (85655658).

The spelling of 83423220 in words is "eighty-three million, four hundred twenty-three thousand, two hundred twenty".