2139815424 has 80 divisors (see below), whose sum is σ = 5884623360. Its totient is φ = 690247680.

The previous prime is 2139815417. The next prime is 2139815443. The reversal of 2139815424 is 4245189312.

It is a congruent number.

It is an unprimeable number.

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, 25147 + ... + 70085.

It is an arithmetic number, because the mean of its divisors is an integer number (73557792).

Almost surely, 2^2139815424 is an apocalyptic number.

2139815424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139815424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2942311680).

2139815424 is an abundant number, since it is smaller than the sum of its proper divisors (3744807936).

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

2139815424 is an equidigital number, since it uses as much as digits as its factorization.

2139815424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44991 (or 44975 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 2139815424 is about 46258.1390027744. The cubic root of 2139815424 is about 1288.6216923373.

The spelling of 2139815424 in words is "two billion, one hundred thirty-nine million, eight hundred fifteen thousand, four hundred twenty-four".