2140816 has 10 divisors (see below), whose sum is σ = 4147862. Its totient is φ = 1070400.

The previous prime is 2140811. The next prime is 2140823. The reversal of 2140816 is 6180412.

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 9216 = 1460^2 + 96^2 .

It is not an unprimeable number, because it can be changed into a prime (2140811) by changing a digit.

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 as a sum of consecutive naturals, namely, 66885 + ... + 66916.

2^2140816 is an apocalyptic number.

It is an amenable number.

2140816 is a deficient number, since it is larger than the sum of its proper divisors (2007046).

2140816 is a wasteful number, since it uses less digits than its factorization.

2140816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133809 (or 133803 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 2140816 is about 1463.1527603091. The cubic root of 2140816 is about 128.8822513867.

The spelling of 2140816 in words is "two million, one hundred forty thousand, eight hundred sixteen".