1320888 has 32 divisors (see below), whose sum is σ = 3375360. Its totient is φ = 430560.

The previous prime is 1320887. The next prime is 1320889. The reversal of 1320888 is 8880231.

It is an interprime number because it is at equal distance from previous prime (1320887) and next prime (1320889).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543 + ... + 1713.

It is an arithmetic number, because the mean of its divisors is an integer number (105480).

2^1320888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1687680).

1320888 is an abundant number, since it is smaller than the sum of its proper divisors (2054472).

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

1320888 is a wasteful number, since it uses less digits than its factorization.

1320888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 1320888 is about 1149.2989167314. The cubic root of 1320888 is about 109.7207240610.

The spelling of 1320888 in words is "one million, three hundred twenty thousand, eight hundred eighty-eight".