84320772 has 12 divisors (see below), whose sum is σ = 196748496. Its totient is φ = 28106920.

The previous prime is 84320771. The next prime is 84320791. The reversal of 84320772 is 27702348.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84320771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3513354 + ... + 3513377.

It is an arithmetic number, because the mean of its divisors is an integer number (16395708).

Almost surely, 2^84320772 is an apocalyptic number.

It is an amenable number.

84320772 is an abundant number, since it is smaller than the sum of its proper divisors (112427724).

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

84320772 is a wasteful number, since it uses less digits than its factorization.

84320772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7026738 (or 7026736 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 84320772 is about 9182.6342625632. The cubic root of 84320772 is about 438.5086769596.

The spelling of 84320772 in words is "eighty-four million, three hundred twenty thousand, seven hundred seventy-two".