83500000 has 84 divisors (see below), whose sum is σ = 206716104. Its totient is φ = 33200000.

The previous prime is 83499991. The next prime is 83500013. The reversal of 83500000 is 538.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 499917 + ... + 500083.

It is an arithmetic number, because the mean of its divisors is an integer number (2460906).

Almost surely, 2^83500000 is an apocalyptic number.

83500000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103358052).

83500000 is an abundant number, since it is smaller than the sum of its proper divisors (123216104).

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

83500000 is an frugal number, since it uses more digits than its factorization.

83500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 83500000 is about 9137.8334412485. The cubic root of 83500000 is about 437.0812319428.

Adding to 83500000 its reverse (538), we get a palindrome (83500538).

The spelling of 83500000 in words is "eighty-three million, five hundred thousand".