1217380 has 12 divisors (see below), whose sum is σ = 2556540. Its totient is φ = 486944.

The previous prime is 1217351. The next prime is 1217393. The reversal of 1217380 is 837121.

It can be written as a sum of positive squares in 2 ways, for example, as 675684 + 541696 = 822^2 + 736^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30415 + ... + 30454.

It is an arithmetic number, because the mean of its divisors is an integer number (213045).

2^1217380 is an apocalyptic number.

1217380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1217380 is an abundant number, since it is smaller than the sum of its proper divisors (1339160).

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

1217380 is a wasteful number, since it uses less digits than its factorization.

1217380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60878 (or 60876 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1217380 is about 1103.3494460052. The cubic root of 1217380 is about 106.7764278145.

The spelling of 1217380 in words is "one million, two hundred seventeen thousand, three hundred eighty".