2688844431 has 16 divisors (see below), whose sum is σ = 4412463104. Its totient is φ = 1418291424.

The previous prime is 2688844421. The next prime is 2688844439. The reversal of 2688844431 is 1344488862.

It is not a de Polignac number, because 2688844431 - 2⁵ = 2688844399 is a prime.

It is a super-2 number, since 2×2688844431² = 14459768748239427522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688844439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4924351 + ... + 4924896.

It is an arithmetic number, because the mean of its divisors is an integer number (275778944).

Almost surely, 2^2688844431 is an apocalyptic number.

2688844431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2688844431 is a deficient number, since it is larger than the sum of its proper divisors (1723618673).

2688844431 is a wasteful number, since it uses less digits than its factorization.

2688844431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9849270.

The product of its digits is 1179648, while the sum is 48.

The square root of 2688844431 is about 51854.0686060409. The cubic root of 2688844431 is about 1390.5562411560.

The spelling of 2688844431 in words is "two billion, six hundred eighty-eight million, eight hundred forty-four thousand, four hundred thirty-one".