2992821 has 12 divisors (see below), whose sum is σ = 4321728. Its totient is φ = 1841424.

The previous prime is 2992817. The next prime is 2992837. The reversal of 2992821 is 1282992.

It is a happy number.

It is not a de Polignac number, because 2992821 - 2² = 2992817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2992841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2445 + ... + 3458.

It is an arithmetic number, because the mean of its divisors is an integer number (360144).

2^2992821 is an apocalyptic number.

It is an amenable number.

2992821 is a deficient number, since it is larger than the sum of its proper divisors (1328907).

2992821 is a wasteful number, since it uses less digits than its factorization.

2992821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5932 (or 5919 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 2992821 is about 1729.9771674794. The cubic root of 2992821 is about 144.1098217015.

The spelling of 2992821 in words is "two million, nine hundred ninety-two thousand, eight hundred twenty-one".