83321388 has 36 divisors (see below), whose sum is σ = 210908880. Its totient is φ = 27735456.

The previous prime is 83321383. The next prime is 83321417. The reversal of 83321388 is 88312338.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83321383) 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, 38881 + ... + 40967.

It is an arithmetic number, because the mean of its divisors is an integer number (5858580).

Almost surely, 2^83321388 is an apocalyptic number.

It is an amenable number.

83321388 is an abundant number, since it is smaller than the sum of its proper divisors (127587492).

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

83321388 is a wasteful number, since it uses less digits than its factorization.

83321388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206 (or 3201 counting only the distinct ones).

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

The square root of 83321388 is about 9128.0549954522. The cubic root of 83321388 is about 436.7693609512.

The spelling of 83321388 in words is "eighty-three million, three hundred twenty-one thousand, three hundred eighty-eight".