2731816 has 8 divisors (see below), whose sum is σ = 5122170. Its totient is φ = 1365904.

The previous prime is 2731787. The next prime is 2731819. The reversal of 2731816 is 6181372.

2731816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2709316 + 22500 = 1646^2 + 150^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2731819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170731 + ... + 170746.

2^2731816 is an apocalyptic number.

It is an amenable number.

2731816 is a deficient number, since it is larger than the sum of its proper divisors (2390354).

2731816 is a wasteful number, since it uses less digits than its factorization.

2731816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341483 (or 341479 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 2731816 is about 1652.8206194261. The cubic root of 2731816 is about 139.7924816686.

The spelling of 2731816 in words is "two million, seven hundred thirty-one thousand, eight hundred sixteen".