1323997488 has 150 divisors (see below), whose sum is σ = 4212568052. Its totient is φ = 401163840.

The previous prime is 1323997487. The next prime is 1323997489. The reversal of 1323997488 is 8847993231.

It is an interprime number because it is at equal distance from previous prime (1323997487) and next prime (1323997489).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1323997483) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 152595 + ... + 161037.

Almost surely, 2^1323997488 is an apocalyptic number.

1323997488 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 1323997488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2106284026).

1323997488 is an abundant number, since it is smaller than the sum of its proper divisors (2888570564).

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

1323997488 is a wasteful number, since it uses less digits than its factorization.

1323997488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8485 (or 8459 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 1323997488 is about 36386.7762793023. The cubic root of 1323997488 is about 1098.0675404122.

The spelling of 1323997488 in words is "one billion, three hundred twenty-three million, nine hundred ninety-seven thousand, four hundred eighty-eight".