397732680000 has 1680 divisors, whose sum is σ = 1637680524480. Its totient is φ = 95219712000.

The previous prime is 397732679999. The next prime is 397732680067. The reversal of 397732680000 is 86237793.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 4791959959 + ... + 4791960041.

It is an arithmetic number, because the mean of its divisors is an integer number (974809836).

Almost surely, 2^397732680000 is an apocalyptic number.

397732680000 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 397732680000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818840262240).

397732680000 is an abundant number, since it is smaller than the sum of its proper divisors (1239947844480).

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

397732680000 is an equidigital number, since it uses as much as digits as its factorization.

397732680000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 397732680000 in words is "three hundred ninety-seven billion, seven hundred thirty-two million, six hundred eighty thousand".