2743220 has 24 divisors (see below), whose sum is σ = 6064800. Its totient is φ = 1039392.

The previous prime is 2743219. The next prime is 2743229. The reversal of 2743220 is 223472.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a d-powerful number, because it can be written as 2⁵ + 7⁶ + 4⁶ + 3 + 2¹⁹ + 2²¹ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 2743192 and 2743201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2743229) 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 7 ways as a sum of consecutive naturals, for example, 3230 + ... + 3989.

It is an arithmetic number, because the mean of its divisors is an integer number (252700).

2^2743220 is an apocalyptic number.

2743220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2743220 is an abundant number, since it is smaller than the sum of its proper divisors (3321580).

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

2743220 is a wasteful number, since it uses less digits than its factorization.

2743220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7247 (or 7245 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 2743220 is about 1656.2668867064. The cubic root of 2743220 is about 139.9867334368.

Adding to 2743220 its reverse (223472), we get a palindrome (2966692).

The spelling of 2743220 in words is "two million, seven hundred forty-three thousand, two hundred twenty".