1321088 has 16 divisors (see below), whose sum is σ = 2632110. Its totient is φ = 660480.

The previous prime is 1321079. The next prime is 1321093. The reversal of 1321088 is 8801231.

It can be written as a sum of positive squares in only one way, i.e., 1098304 + 222784 = 1048^2 + 472^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5033 + ... + 5288.

2^1321088 is an apocalyptic number.

It is an amenable number.

1321088 is a deficient number, since it is larger than the sum of its proper divisors (1311022).

1321088 is an equidigital number, since it uses as much as digits as its factorization.

1321088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10335 (or 10323 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1321088 is about 1149.3859230041. The cubic root of 1321088 is about 109.7262615069.

The spelling of 1321088 in words is "one million, three hundred twenty-one thousand, eighty-eight".