2237220 has 60 divisors (see below), whose sum is σ = 7023324. Its totient is φ = 596160.

The previous prime is 2237219. The next prime is 2237267. The reversal of 2237220 is 227322.

It can be written as a sum of positive squares in 2 ways, for example, as 910116 + 1327104 = 954^2 + 1152^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁹ + 2¹³ + 3⁵ + 7² + 2¹⁷ + 2²¹ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 2237193 and 2237202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 930 + ... + 2310.

2^2237220 is an apocalyptic number.

2237220 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 2237220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3511662).

2237220 is an abundant number, since it is smaller than the sum of its proper divisors (4786104).

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

2237220 is a wasteful number, since it uses less digits than its factorization.

2237220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 2237220 is about 1495.7339335590. The cubic root of 2237220 is about 130.7885016405.

The spelling of 2237220 in words is "two million, two hundred thirty-seven thousand, two hundred twenty".