2140487856 has 120 divisors (see below), whose sum is σ = 6690283600. Its totient is φ = 658596096.

The previous prime is 2140487821. The next prime is 2140487873. The reversal of 2140487856 is 6587840412.

It is a super-3 number, since 3×2140487856³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29370 + ... + 71718.

Almost surely, 2^2140487856 is an apocalyptic number.

2140487856 is a gapful number since it is divisible by the number (26) 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 2140487856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3345141800).

2140487856 is an abundant number, since it is smaller than the sum of its proper divisors (4549795744).

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

2140487856 is a wasteful number, since it uses less digits than its factorization.

2140487856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42385 (or 42367 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 2140487856 is about 46265.4066879348. The cubic root of 2140487856 is about 1288.7566603197.

The spelling of 2140487856 in words is "two billion, one hundred forty million, four hundred eighty-seven thousand, eight hundred fifty-six".