84278792 has 64 divisors (see below), whose sum is σ = 182936880. Its totient is φ = 36052992.

The previous prime is 84278791. The next prime is 84278797. The reversal of 84278792 is 29787248.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 29311396 + 54967396 = 5414^2 + 7414^2 .

It is not an unprimeable number, because it can be changed into a prime (84278791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128738 + ... + 129390.

Almost surely, 2^84278792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84278792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91468440).

84278792 is an abundant number, since it is smaller than the sum of its proper divisors (98658088).

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

84278792 is a wasteful number, since it uses less digits than its factorization.

84278792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 758 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 84278792 is about 9180.3481415467. The cubic root of 84278792 is about 438.4358927981.

The spelling of 84278792 in words is "eighty-four million, two hundred seventy-eight thousand, seven hundred ninety-two".