2140688 has 20 divisors (see below), whose sum is σ = 4525008. Its totient is φ = 972960.

The previous prime is 2140681. The next prime is 2140729. The reversal of 2140688 is 8860412.

It is a super-2 number, since 2×2140688² = 9165090226688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2140688.

It is not an unprimeable number, because it can be changed into a prime (2140681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5906 + ... + 6257.

2^2140688 is an apocalyptic number.

It is an amenable number.

2140688 is an abundant number, since it is smaller than the sum of its proper divisors (2384320).

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

2140688 is a wasteful number, since it uses less digits than its factorization.

2140688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12182 (or 12176 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 2140688 is about 1463.1090184945. The cubic root of 2140688 is about 128.8796827000.

The spelling of 2140688 in words is "two million, one hundred forty thousand, six hundred eighty-eight".