2644423012 has 24 divisors (see below), whose sum is σ = 5769650880. Its totient is φ = 1030294560.

The previous prime is 2644423009. The next prime is 2644423013. The reversal of 2644423012 is 2103244462.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (2644423013) 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, 4292587 + ... + 4293202.

It is an arithmetic number, because the mean of its divisors is an integer number (240402120).

Almost surely, 2^2644423012 is an apocalyptic number.

2644423012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2644423012 is an abundant number, since it is smaller than the sum of its proper divisors (3125227868).

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

2644423012 is a wasteful number, since it uses less digits than its factorization.

2644423012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8585811 (or 8585809 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 2644423012 is about 51423.9536791951. The cubic root of 2644423012 is about 1382.8560558871.

Adding to 2644423012 its reverse (2103244462), we get a palindrome (4747667474).

The spelling of 2644423012 in words is "two billion, six hundred forty-four million, four hundred twenty-three thousand, twelve".