83570730 has 64 divisors (see below), whose sum is σ = 216096768. Its totient is φ = 20623680.

The previous prime is 83570723. The next prime is 83570741. The reversal of 83570730 is 3707538.

It is a junction number, because it is equal to n+sod(n) for n = 83570691 and 83570700.

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 31 ways as a sum of consecutive naturals, for example, 19437 + ... + 23343.

It is an arithmetic number, because the mean of its divisors is an integer number (3376512).

Almost surely, 2^83570730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83570730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108048384).

83570730 is an abundant number, since it is smaller than the sum of its proper divisors (132526038).

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

83570730 is a wasteful number, since it uses less digits than its factorization.

83570730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 83570730 is about 9141.7027954315. The cubic root of 83570730 is about 437.2046093109.

The spelling of 83570730 in words is "eighty-three million, five hundred seventy thousand, seven hundred thirty".