1941220 has 36 divisors (see below), whose sum is σ = 4254012. Its totient is φ = 744000.

The previous prime is 1941193. The next prime is 1941221. The reversal of 1941220 is 221491.

It can be written as a sum of positive squares in 2 ways, for example, as 1387684 + 553536 = 1178^2 + 744^2 .

It is a Smith number, since the sum of its digits (19) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1941221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19170 + ... + 19270.

It is an arithmetic number, because the mean of its divisors is an integer number (118167).

2^1941220 is an apocalyptic number.

1941220 is a gapful number since it is divisible by the number (10) 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 1941220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2127006).

1941220 is an abundant number, since it is smaller than the sum of its proper divisors (2312792).

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

1941220 is a wasteful number, since it uses less digits than its factorization.

1941220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1941220 is about 1393.2767133631. The cubic root of 1941220 is about 124.7455088925.

The spelling of 1941220 in words is "one million, nine hundred forty-one thousand, two hundred twenty".