2338821 has 24 divisors (see below), whose sum is σ = 3623360. Its totient is φ = 1490832.

The previous prime is 2338799. The next prime is 2338823. The reversal of 2338821 is 1288332.

It is not a de Polignac number, because 2338821 - 2⁶ = 2338757 is a prime.

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

It is a Duffinian number.

2338821 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2338823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22656 + ... + 22758.

2^2338821 is an apocalyptic number.

It is an amenable number.

2338821 is a deficient number, since it is larger than the sum of its proper divisors (1284539).

2338821 is a wasteful number, since it uses less digits than its factorization.

2338821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 135 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 2338821 is about 1529.3204373185. The cubic root of 2338821 is about 132.7391385668.

It can be divided in two parts, 23388 and 21, that added together give a square (23409 = 153²).

The spelling of 2338821 in words is "two million, three hundred thirty-eight thousand, eight hundred twenty-one".