1200870 has 48 divisors (see below), whose sum is σ = 3408912. Its totient is φ = 290880.

The previous prime is 1200869. The next prime is 1200883. The reversal of 1200870 is 780021.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384 + ... + 1596.

It is an arithmetic number, because the mean of its divisors is an integer number (71019).

2^1200870 is an apocalyptic number.

1200870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1704456).

1200870 is an abundant number, since it is smaller than the sum of its proper divisors (2208042).

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

1200870 is a wasteful number, since it uses less digits than its factorization.

1200870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237 (or 1234 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 1200870 is about 1095.8421419164. The cubic root of 1200870 is about 106.2915316300.

Adding to 1200870 its reverse (780021), we get a palindrome (1980891).

The spelling of 1200870 in words is "one million, two hundred thousand, eight hundred seventy".