83219784 has 32 divisors (see below), whose sum is σ = 210561120. Its totient is φ = 27405056.

The previous prime is 83219783. The next prime is 83219827. The reversal of 83219784 is 48791238.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (83219783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18897 + ... + 22880.

It is an arithmetic number, because the mean of its divisors is an integer number (6580035).

Almost surely, 2^83219784 is an apocalyptic number.

It is an amenable number.

83219784 is an abundant number, since it is smaller than the sum of its proper divisors (127341336).

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

83219784 is a wasteful number, since it uses less digits than its factorization.

83219784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41869 (or 41865 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 83219784 is about 9122.4878185723. The cubic root of 83219784 is about 436.5917532334.

The spelling of 83219784 in words is "eighty-three million, two hundred nineteen thousand, seven hundred eighty-four".