1189220 has 24 divisors (see below), whose sum is σ = 2527224. Its totient is φ = 470016.

The previous prime is 1189219. The next prime is 1189231. The reversal of 1189220 is 229811.

It can be written as a sum of positive squares in 4 ways, for example, as 5476 + 1183744 = 74^2 + 1088^2 .

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, 1634 + ... + 2246.

It is an arithmetic number, because the mean of its divisors is an integer number (105301).

2^1189220 is an apocalyptic number.

1189220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1189220 is an abundant number, since it is smaller than the sum of its proper divisors (1338004).

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

1189220 is a wasteful number, since it uses less digits than its factorization.

1189220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1189220 is about 1090.5136404466. The cubic root of 1189220 is about 105.9466920755.

The spelling of 1189220 in words is "one million, one hundred eighty-nine thousand, two hundred twenty".