83880036 has 60 divisors (see below), whose sum is σ = 225237628. Its totient is φ = 27200448.

The previous prime is 83880001. The next prime is 83880037. The reversal of 83880036 is 63008838.

It can be written as a sum of positive squares in 2 ways, for example, as 53144100 + 30735936 = 7290^2 + 5544^2 .

It is a super-2 number, since 2×83880036² = 14071720878722592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (83880037) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8490 + ... + 15486.

Almost surely, 2^83880036 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 83880036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112618814).

83880036 is an abundant number, since it is smaller than the sum of its proper divisors (141357592).

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

83880036 is a wasteful number, since it uses less digits than its factorization.

83880036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7050 (or 7039 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 83880036 is about 9158.6044788494. The cubic root of 83880036 is about 437.7433286948.

The spelling of 83880036 in words is "eighty-three million, eight hundred eighty thousand, thirty-six".