2864260644 has 48 divisors (see below), whose sum is σ = 7693811328. Its totient is φ = 812383488.

The previous prime is 2864260627. The next prime is 2864260649. The reversal of 2864260644 is 4460624682.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2864260596 and 2864260605.

It is not an unprimeable number, because it can be changed into a prime (2864260649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112939 + ... + 135954.

It is an arithmetic number, because the mean of its divisors is an integer number (160287736).

Almost surely, 2^2864260644 is an apocalyptic number.

It is an amenable number.

2864260644 is an abundant number, since it is smaller than the sum of its proper divisors (4829550684).

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

2864260644 is a wasteful number, since it uses less digits than its factorization.

2864260644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249044 (or 249042 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 42.

The square root of 2864260644 is about 53518.7877665405. The cubic root of 2864260644 is about 1420.1607706617.

The spelling of 2864260644 in words is "two billion, eight hundred sixty-four million, two hundred sixty thousand, six hundred forty-four".