1327788 has 72 divisors (see below), whose sum is σ = 4193280. Its totient is φ = 344160.

The previous prime is 1327783. The next prime is 1327789. The reversal of 1327788 is 8877231.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2533 + ... + 3011.

It is an arithmetic number, because the mean of its divisors is an integer number (58240).

2^1327788 is an apocalyptic number.

1327788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1327788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2096640).

1327788 is an abundant number, since it is smaller than the sum of its proper divisors (2865492).

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

1327788 is a wasteful number, since it uses less digits than its factorization.

1327788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 502 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 1327788 is about 1152.2968367569. The cubic root of 1327788 is about 109.9114438780.

The spelling of 1327788 in words is "one million, three hundred twenty-seven thousand, seven hundred eighty-eight".