2881578 has 64 divisors (see below), whose sum is σ = 7280640. Its totient is φ = 741312.

The previous prime is 2881573. The next prime is 2881589. The reversal of 2881578 is 8751882.

2881578 is an undulating number in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18276 + ... + 18432.

It is an arithmetic number, because the mean of its divisors is an integer number (113760).

2^2881578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2881578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3640320).

2881578 is an abundant number, since it is smaller than the sum of its proper divisors (4399062).

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

2881578 is a wasteful number, since it uses less digits than its factorization.

2881578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211.

The product of its digits is 35840, while the sum is 39.

The square root of 2881578 is about 1697.5211338891. The cubic root of 2881578 is about 142.3017125168.

The spelling of 2881578 in words is "two million, eight hundred eighty-one thousand, five hundred seventy-eight".