2644426268 has 24 divisors (see below), whose sum is σ = 5051311104. Its totient is φ = 1201330800.

The previous prime is 2644426259. The next prime is 2644426321. The reversal of 2644426268 is 8626244462.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66053 + ... + 98243.

It is an arithmetic number, because the mean of its divisors is an integer number (210471296).

Almost surely, 2^2644426268 is an apocalyptic number.

It is an amenable number.

2644426268 is a deficient number, since it is larger than the sum of its proper divisors (2406884836).

2644426268 is a wasteful number, since it uses less digits than its factorization.

2644426268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34073 (or 34071 counting only the distinct ones).

The product of its digits is 884736, while the sum is 44.

The square root of 2644426268 is about 51423.9853375835. The cubic root of 2644426268 is about 1382.8566234435.

The spelling of 2644426268 in words is "two billion, six hundred forty-four million, four hundred twenty-six thousand, two hundred sixty-eight".