397342000 has 80 divisors (see below), whose sum is σ = 1048173984. Its totient is φ = 144480000.

The previous prime is 397341991. The next prime is 397342009. The reversal of 397342000 is 243793.

It is an interprime number because it is at equal distance from previous prime (397341991) and next prime (397342009).

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 397342000.

It is not an unprimeable number, because it can be changed into a prime (397342009) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12970 + ... + 31030.

Almost surely, 2^397342000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397342000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524086992).

397342000 is an abundant number, since it is smaller than the sum of its proper divisors (650831984).

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

397342000 is a wasteful number, since it uses less digits than its factorization.

397342000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18095 (or 18079 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 397342000 is about 19933.4392416362. The cubic root of 397342000 is about 735.1706454321.

Adding to 397342000 its reverse (243793), we get a palindrome (397585793).

The spelling of 397342000 in words is "three hundred ninety-seven million, three hundred forty-two thousand".