2140864 has 28 divisors (see below), whose sum is σ = 4636008. Its totient is φ = 972800.

The previous prime is 2140849. The next prime is 2140877. The reversal of 2140864 is 4680412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817 + ... + 2224.

2^2140864 is an apocalyptic number.

It is an amenable number.

2140864 is an abundant number, since it is smaller than the sum of its proper divisors (2495144).

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

2140864 is a wasteful number, since it uses less digits than its factorization.

2140864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064 (or 3054 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 2140864 is about 1463.1691631524. The cubic root of 2140864 is about 128.8832146179.

The spelling of 2140864 in words is "two million, one hundred forty thousand, eight hundred sixty-four".