2421881064 has 48 divisors (see below), whose sum is σ = 6945103620. Its totient is φ = 759805440.

The previous prime is 2421881023. The next prime is 2421881129. The reversal of 2421881064 is 4601881242.

It can be written as a sum of positive squares in 2 ways, for example, as 2194172964 + 227708100 = 46842^2 + 15090^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 988107 + ... + 990554.

Almost surely, 2^2421881064 is an apocalyptic number.

2421881064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2421881064 is an abundant number, since it is smaller than the sum of its proper divisors (4523222556).

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

2421881064 is a wasteful number, since it uses less digits than its factorization.

2421881064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978690 (or 1978683 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 2421881064 is about 49212.6108228369. The cubic root of 2421881064 is about 1342.9224595576.

The spelling of 2421881064 in words is "two billion, four hundred twenty-one million, eight hundred eighty-one thousand, sixty-four".