2821954 has 4 divisors (see below), whose sum is σ = 4232934. Its totient is φ = 1410976.

The previous prime is 2821933. The next prime is 2821957. The reversal of 2821954 is 4591282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2772225 + 49729 = 1665^2 + 223^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2821957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705487 + ... + 705490.

2^2821954 is an apocalyptic number.

2821954 is a deficient number, since it is larger than the sum of its proper divisors (1410980).

2821954 is a wasteful number, since it uses less digits than its factorization.

2821954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410979.

The product of its digits is 5760, while the sum is 31.

The square root of 2821954 is about 1679.8672566605. The cubic root of 2821954 is about 141.3133884181.

The spelling of 2821954 in words is "two million, eight hundred twenty-one thousand, nine hundred fifty-four".