2127254640 has 240 divisors, whose sum is σ = 7818169248. Its totient is φ = 476915712.

The previous prime is 2127254551. The next prime is 2127254641. The reversal of 2127254640 is 464527212.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127254641) 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 47 ways as a sum of consecutive naturals, for example, 621574 + ... + 624986.

Almost surely, 2^2127254640 is an apocalyptic number.

2127254640 is a gapful number since it is divisible by the number (20) 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 2127254640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3909084624).

2127254640 is an abundant number, since it is smaller than the sum of its proper divisors (5690914608).

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

2127254640 is a wasteful number, since it uses less digits than its factorization.

2127254640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496 (or 3483 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 2127254640 is about 46122.1708075411. The cubic root of 2127254640 is about 1286.0953259333.

The spelling of 2127254640 in words is "two billion, one hundred twenty-seven million, two hundred fifty-four thousand, six hundred forty".