2781528841 has 8 divisors (see below), whose sum is σ = 3423420224. Its totient is φ = 2200770000.

The previous prime is 2781528839. The next prime is 2781528857. The reversal of 2781528841 is 1488251872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2781528841 - 2¹ = 2781528839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2781528791 and 2781528800.

It is not an unprimeable number, because it can be changed into a prime (2781528341) 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, 15283035 + ... + 15283216.

It is an arithmetic number, because the mean of its divisors is an integer number (427927528).

Almost surely, 2^2781528841 is an apocalyptic number.

It is an amenable number.

2781528841 is a deficient number, since it is larger than the sum of its proper divisors (641891383).

2781528841 is a wasteful number, since it uses less digits than its factorization.

2781528841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30566271.

The product of its digits is 286720, while the sum is 46.

The square root of 2781528841 is about 52740.2013742837. The cubic root of 2781528841 is about 1406.3535780800.

The spelling of 2781528841 in words is "two billion, seven hundred eighty-one million, five hundred twenty-eight thousand, eight hundred forty-one".