2179220 has 12 divisors (see below), whose sum is σ = 4576404. Its totient is φ = 871680.

The previous prime is 2179217. The next prime is 2179223. The reversal of 2179220 is 229712.

2179220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2179217) and next prime (2179223).

It can be written as a sum of positive squares in 2 ways, for example, as 1249924 + 929296 = 1118^2 + 964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54461 + ... + 54500.

It is an arithmetic number, because the mean of its divisors is an integer number (381367).

2^2179220 is an apocalyptic number.

2179220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2179220 is an abundant number, since it is smaller than the sum of its proper divisors (2397184).

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

2179220 is a wasteful number, since it uses less digits than its factorization.

2179220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108970 (or 108968 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2179220 is about 1476.2181410618. The cubic root of 2179220 is about 129.6483593597.

It can be divided in two parts, 21792 and 20, that added together give a palindrome (21812).

The spelling of 2179220 in words is "two million, one hundred seventy-nine thousand, two hundred twenty".