1397232000 has 384 divisors, whose sum is σ = 5196222720. Its totient is φ = 359424000.

The previous prime is 1397231987. The next prime is 1397232007. The reversal of 1397232000 is 2327931.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397232007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4463844 + ... + 4464156.

It is an arithmetic number, because the mean of its divisors is an integer number (13531830).

Almost surely, 2^1397232000 is an apocalyptic number.

1397232000 is a gapful number since it is divisible by the number (10) 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 1397232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598111360).

1397232000 is an abundant number, since it is smaller than the sum of its proper divisors (3798990720).

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

1397232000 is a wasteful number, since it uses less digits than its factorization.

1397232000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 1397232000 is about 37379.5666106497. The cubic root of 1397232000 is about 1117.9511863677.

Adding to 1397232000 its reverse (2327931), we get a palindrome (1399559931).

The spelling of 1397232000 in words is "one billion, three hundred ninety-seven million, two hundred thirty-two thousand".