2821516 has 12 divisors (see below), whose sum is σ = 4951800. Its totient is φ = 1406720.

The previous prime is 2821513. The next prime is 2821517. The reversal of 2821516 is 6151282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821513) 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, 1011 + ... + 2581.

It is an arithmetic number, because the mean of its divisors is an integer number (412650).

2^2821516 is an apocalyptic number.

It is an amenable number.

2821516 is a deficient number, since it is larger than the sum of its proper divisors (2130284).

2821516 is a wasteful number, since it uses less digits than its factorization.

2821516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024 (or 2022 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 2821516 is about 1679.7368841578. The cubic root of 2821516 is about 141.3060768807.

Adding to 2821516 its reverse (6151282), we get a palindrome (8972798).

It can be divided in two parts, 2 and 821516, that multiplied together give a cube (1643032 = 118³).

The spelling of 2821516 in words is "two million, eight hundred twenty-one thousand, five hundred sixteen".