2293820 has 12 divisors (see below), whose sum is σ = 4817064. Its totient is φ = 917520.

The previous prime is 2293817. The next prime is 2293829. The reversal of 2293820 is 283922.

It is a super-2 number, since 2×2293820² = 10523220384800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2293820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2293829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57326 + ... + 57365.

It is an arithmetic number, because the mean of its divisors is an integer number (401422).

2^2293820 is an apocalyptic number.

2293820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2293820 is an abundant number, since it is smaller than the sum of its proper divisors (2523244).

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

2293820 is a wasteful number, since it uses less digits than its factorization.

2293820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114700 (or 114698 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2293820 is about 1514.5362326468. The cubic root of 2293820 is about 131.8822794960.

It can be divided in two parts, 2293 and 820, that added together give a palindrome (3113).

The spelling of 2293820 in words is "two million, two hundred ninety-three thousand, eight hundred twenty".