2722280 has 64 divisors (see below), whose sum is σ = 6998400. Its totient is φ = 943360.

The previous prime is 2722273. The next prime is 2722309. The reversal of 2722280 is 822272.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9986 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (109350).

2^2722280 is an apocalyptic number.

2722280 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 2722280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3499200).

2722280 is an abundant number, since it is smaller than the sum of its proper divisors (4276120).

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

2722280 is a wasteful number, since it uses less digits than its factorization.

2722280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2722280 is about 1649.9333319865. The cubic root of 2722280 is about 139.6296333126.

It can be divided in two parts, 272 and 2280, that added together give a palindrome (2552).

The spelling of 2722280 in words is "two million, seven hundred twenty-two thousand, two hundred eighty".