2725220 has 12 divisors (see below), whose sum is σ = 5723004. Its totient is φ = 1090080.

The previous prime is 2725199. The next prime is 2725231. The reversal of 2725220 is 225272.

It can be written as a sum of positive squares in 2 ways, for example, as 2119936 + 605284 = 1456^2 + 778^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 136261 = 2725220 / (2 + 7 + 2 + 5 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 2725192 and 2725201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68111 + ... + 68150.

It is an arithmetic number, because the mean of its divisors is an integer number (476917).

2^2725220 is an apocalyptic number.

2725220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2725220 is an abundant number, since it is smaller than the sum of its proper divisors (2997784).

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

2725220 is a wasteful number, since it uses less digits than its factorization.

2725220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136270 (or 136268 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 2725220 is about 1650.8240366556. The cubic root of 2725220 is about 139.6798808293.

It can be divided in two parts, 27252 and 20, that added together give a palindrome (27272).

The spelling of 2725220 in words is "two million, seven hundred twenty-five thousand, two hundred twenty".