83870772 has 24 divisors (see below), whose sum is σ = 195893376. Its totient is φ = 27929088.

The previous prime is 83870771. The next prime is 83870777. The reversal of 83870772 is 27707838.

83870772 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

83870772 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83870771) 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, 11733 + ... + 17475.

It is an arithmetic number, because the mean of its divisors is an integer number (8162224).

Almost surely, 2^83870772 is an apocalyptic number.

It is an amenable number.

83870772 is an abundant number, since it is smaller than the sum of its proper divisors (112022604).

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

83870772 is a wasteful number, since it uses less digits than its factorization.

83870772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6967 (or 6965 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 83870772 is about 9158.0987109771. The cubic root of 83870772 is about 437.7272128080.

The spelling of 83870772 in words is "eighty-three million, eight hundred seventy thousand, seven hundred seventy-two".