2578831872 has 160 divisors (see below), whose sum is σ = 7061482560. Its totient is φ = 836075520.

The previous prime is 2578831841. The next prime is 2578831903. The reversal of 2578831872 is 2781388752.

It is an interprime number because it is at equal distance from previous prime (2578831841) and next prime (2578831903).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12221847 + ... + 12222057.

It is an arithmetic number, because the mean of its divisors is an integer number (44134266).

Almost surely, 2^2578831872 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 2578831872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3530741280).

2578831872 is an abundant number, since it is smaller than the sum of its proper divisors (4482650688).

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

2578831872 is a wasteful number, since it uses less digits than its factorization.

2578831872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 398 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 51.

The square root of 2578831872 is about 50782.2003461843. The cubic root of 2578831872 is about 1371.3269456441.

The spelling of 2578831872 in words is "two billion, five hundred seventy-eight million, eight hundred thirty-one thousand, eight hundred seventy-two".