83139210 has 320 divisors, whose sum is σ = 294395904. Its totient is φ = 16329600.

The previous prime is 83139209. The next prime is 83139229. The reversal of 83139210 is 1293138.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1933449 + ... + 1933491.

Almost surely, 2^83139210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83139210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147197952).

83139210 is an abundant number, since it is smaller than the sum of its proper divisors (211256694).

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

83139210 is a wasteful number, since it uses less digits than its factorization.

83139210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 83139210 is about 9118.0705195781. The cubic root of 83139210 is about 436.4508039642.

The spelling of 83139210 in words is "eighty-three million, one hundred thirty-nine thousand, two hundred ten".