2764439140 has 24 divisors (see below), whose sum is σ = 5807144952. Its totient is φ = 1105428480.

The previous prime is 2764439131. The next prime is 2764439147. The reversal of 2764439140 is 419344672.

It can be written as a sum of positive squares in 4 ways, for example, as 335329344 + 2429109796 = 18312^2 + 49286^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2764439093 and 2764439102.

It is not an unprimeable number, because it can be changed into a prime (2764439147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49252 + ... + 89188.

It is an arithmetic number, because the mean of its divisors is an integer number (241964373).

Almost surely, 2^2764439140 is an apocalyptic number.

2764439140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2764439140 is an abundant number, since it is smaller than the sum of its proper divisors (3042705812).

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

2764439140 is a wasteful number, since it uses less digits than its factorization.

2764439140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43407 (or 43405 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 2764439140 is about 52577.9339647347. The cubic root of 2764439140 is about 1403.4674491251.

The spelling of 2764439140 in words is "two billion, seven hundred sixty-four million, four hundred thirty-nine thousand, one hundred forty".