83823880 has 32 divisors (see below), whose sum is σ = 215547840. Its totient is φ = 28739520.

The previous prime is 83823871. The next prime is 83823881. The reversal of 83823880 is 8832838.

83823880 = 72² + 73² + ... + 631².

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (83823881) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 149406 + ... + 149965.

It is an arithmetic number, because the mean of its divisors is an integer number (6735870).

Almost surely, 2^83823880 is an apocalyptic number.

It is an amenable number.

83823880 is an abundant number, since it is smaller than the sum of its proper divisors (131723960).

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

83823880 is a wasteful number, since it uses less digits than its factorization.

83823880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299389 (or 299385 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 83823880 is about 9155.5382146546. The cubic root of 83823880 is about 437.6456200970.

The spelling of 83823880 in words is "eighty-three million, eight hundred twenty-three thousand, eight hundred eighty".