1321488 has 160 divisors (see below), whose sum is σ = 4761600. Its totient is φ = 342144.

The previous prime is 1321487. The next prime is 1321513. The reversal of 1321488 is 8841231.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1321483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57445 + ... + 57467.

It is an arithmetic number, because the mean of its divisors is an integer number (29760).

2^1321488 is an apocalyptic number.

1321488 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 1321488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2380800).

1321488 is an abundant number, since it is smaller than the sum of its proper divisors (3440112).

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

1321488 is a wasteful number, since it uses less digits than its factorization.

1321488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 54 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 1321488 is about 1149.5599157939. The cubic root of 1321488 is about 109.7373347222.

It can be divided in two parts, 1 and 321488, that added together give a square (321489 = 567²).

The spelling of 1321488 in words is "one million, three hundred twenty-one thousand, four hundred eighty-eight".