1327990 has 24 divisors (see below), whose sum is σ = 2481120. Its totient is φ = 511680.

The previous prime is 1327987. The next prime is 1327999. The reversal of 1327990 is 997231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16771 + ... + 16849.

It is an arithmetic number, because the mean of its divisors is an integer number (103380).

2^1327990 is an apocalyptic number.

1327990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1327990 is a deficient number, since it is larger than the sum of its proper divisors (1153130).

1327990 is an equidigital number, since it uses as much as digits as its factorization.

1327990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 1327990 is about 1152.3844844495. The cubic root of 1327990 is about 109.9170173044.

The spelling of 1327990 in words is "one million, three hundred twenty-seven thousand, nine hundred ninety".