83872278 has 48 divisors (see below), whose sum is σ = 208555776. Its totient is φ = 23862960.

The previous prime is 83872259. The next prime is 83872301. The reversal of 83872278 is 87227838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31873 + ... + 34403.

It is an arithmetic number, because the mean of its divisors is an integer number (4344912).

Almost surely, 2^83872278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83872278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104277888).

83872278 is an abundant number, since it is smaller than the sum of its proper divisors (124683498).

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

83872278 is a wasteful number, since it uses less digits than its factorization.

83872278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809 (or 2806 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 83872278 is about 9158.1809329146. The cubic root of 83872278 is about 437.7298327642.

The spelling of 83872278 in words is "eighty-three million, eight hundred seventy-two thousand, two hundred seventy-eight".