397225230720 has 256 divisors, whose sum is σ = 1310522112000. Its totient is φ = 102233456640.

The previous prime is 397225230707. The next prime is 397225230749. The reversal of 397225230720 is 27032522793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22549276 + ... + 22566884.

It is an arithmetic number, because the mean of its divisors is an integer number (5119227000).

Almost surely, 2^397225230720 is an apocalyptic number.

397225230720 is a gapful number since it is divisible by the number (30) 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 397225230720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655261056000).

397225230720 is an abundant number, since it is smaller than the sum of its proper divisors (913296881280).

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

397225230720 is a wasteful number, since it uses less digits than its factorization.

397225230720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18041 (or 18029 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 42.

The spelling of 397225230720 in words is "three hundred ninety-seven billion, two hundred twenty-five million, two hundred thirty thousand, seven hundred twenty".