2722420 has 24 divisors (see below), whose sum is σ = 5902848. Its totient is φ = 1053600.

The previous prime is 2722417. The next prime is 2722427. The reversal of 2722420 is 242272.

2722420 = 419² + 420² + ... + 433².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2722427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1576 + ... + 2815.

It is an arithmetic number, because the mean of its divisors is an integer number (245952).

2^2722420 is an apocalyptic number.

2722420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2722420 is an abundant number, since it is smaller than the sum of its proper divisors (3180428).

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

2722420 is a wasteful number, since it uses less digits than its factorization.

2722420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4431 (or 4429 counting only the distinct ones).

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

The square root of 2722420 is about 1649.9757573977. The cubic root of 2722420 is about 139.6320268716.

Adding to 2722420 its reverse (242272), we get a palindrome (2964692).

The spelling of 2722420 in words is "two million, seven hundred twenty-two thousand, four hundred twenty".