83700420 has 96 divisors (see below), whose sum is σ = 243468288. Its totient is φ = 21470592.

The previous prime is 83700389. The next prime is 83700439. The reversal of 83700420 is 2400738.

It is a plaindrome in base 13.

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, 188719 + ... + 189161.

It is an arithmetic number, because the mean of its divisors is an integer number (2536128).

Almost surely, 2^83700420 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 83700420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121734144).

83700420 is an abundant number, since it is smaller than the sum of its proper divisors (159767868).

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

83700420 is a wasteful number, since it uses less digits than its factorization.

83700420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 83700420 is about 9148.7933630616. The cubic root of 83700420 is about 437.4306524097.

The spelling of 83700420 in words is "eighty-three million, seven hundred thousand, four hundred twenty".