1347990 has 64 divisors (see below), whose sum is σ = 3801600. Its totient is φ = 305760.

The previous prime is 1347989. The next prime is 1348001. The reversal of 1347990 is 997431.

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 31 ways as a sum of consecutive naturals, for example, 10225 + ... + 10355.

It is an arithmetic number, because the mean of its divisors is an integer number (59400).

2^1347990 is an apocalyptic number.

1347990 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 1347990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1900800).

1347990 is an abundant number, since it is smaller than the sum of its proper divisors (2453610).

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

1347990 is a wasteful number, since it uses less digits than its factorization.

1347990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1347990 is about 1161.0297153820. The cubic root of 1347990 is about 110.4660665786.

The spelling of 1347990 in words is "one million, three hundred forty-seven thousand, nine hundred ninety".