2190220 has 24 divisors (see below), whose sum is σ = 4713408. Its totient is φ = 854400.

The previous prime is 2190217. The next prime is 2190233. The reversal of 2190220 is 220912.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2190194 and 2190203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516 + ... + 2155.

It is an arithmetic number, because the mean of its divisors is an integer number (196392).

2^2190220 is an apocalyptic number.

2190220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2190220 is an abundant number, since it is smaller than the sum of its proper divisors (2523188).

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

2190220 is a wasteful number, since it uses less digits than its factorization.

2190220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2719 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2190220 is about 1479.9391879398. The cubic root of 2190220 is about 129.8661343905.

The spelling of 2190220 in words is "two million, one hundred ninety thousand, two hundred twenty".