83090520 has 48 divisors (see below), whose sum is σ = 270045360. Its totient is φ = 22157376.

The previous prime is 83090507. The next prime is 83090521. The reversal of 83090520 is 2509038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83090521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115044 + ... + 115763.

It is an arithmetic number, because the mean of its divisors is an integer number (5625945).

Almost surely, 2^83090520 is an apocalyptic number.

It is an amenable number.

83090520 is an abundant number, since it is smaller than the sum of its proper divisors (186954840).

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

83090520 is a wasteful number, since it uses less digits than its factorization.

83090520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230824 (or 230817 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 83090520 is about 9115.4001557803. The cubic root of 83090520 is about 436.3655856920.

Adding to 83090520 its reverse (2509038), we get a palindrome (85599558).

The spelling of 83090520 in words is "eighty-three million, ninety thousand, five hundred twenty".