83620420 has 24 divisors (see below), whose sum is σ = 189111384. Its totient is φ = 30875136.

The previous prime is 83620417. The next prime is 83620421. The reversal of 83620420 is 2402638.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1065024 + 82555396 = 1032^2 + 9086^2 .

It is not an unprimeable number, because it can be changed into a prime (83620421) 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, 160549 + ... + 161068.

It is an arithmetic number, because the mean of its divisors is an integer number (7879641).

Almost surely, 2^83620420 is an apocalyptic number.

It is an amenable number.

83620420 is an abundant number, since it is smaller than the sum of its proper divisors (105490964).

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

83620420 is a wasteful number, since it uses less digits than its factorization.

83620420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321639 (or 321637 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 83620420 is about 9144.4201565764. The cubic root of 83620420 is about 437.2912440801.

The spelling of 83620420 in words is "eighty-three million, six hundred twenty thousand, four hundred twenty".