2742220 has 48 divisors (see below), whose sum is σ = 6350400. Its totient is φ = 988416.

The previous prime is 2742217. The next prime is 2742227. The reversal of 2742220 is 222472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742227) 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 15 ways as a sum of consecutive naturals, for example, 13681 + ... + 13879.

It is an arithmetic number, because the mean of its divisors is an integer number (132300).

2^2742220 is an apocalyptic number.

2742220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2742220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3175200).

2742220 is an abundant number, since it is smaller than the sum of its proper divisors (3608180).

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

2742220 is a wasteful number, since it uses less digits than its factorization.

2742220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 2742220 is about 1655.9649754750. The cubic root of 2742220 is about 139.9697213431.

Adding to 2742220 its reverse (222472), we get a palindrome (2964692).

The spelling of 2742220 in words is "two million, seven hundred forty-two thousand, two hundred twenty".