2821392 has 100 divisors (see below), whose sum is σ = 9362496. Its totient is φ = 803520.

The previous prime is 2821369. The next prime is 2821393. The reversal of 2821392 is 2931282.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (2821393) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8917 + ... + 9227.

2^2821392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2821392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4681248).

2821392 is an abundant number, since it is smaller than the sum of its proper divisors (6541104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2821392 is a wasteful number, since it uses less digits than its factorization.

2821392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 323 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2821392 is about 1679.6999732095. The cubic root of 2821392 is about 141.3040068103.

The spelling of 2821392 in words is "two million, eight hundred twenty-one thousand, three hundred ninety-two".