397201800 has 48 divisors (see below), whose sum is σ = 1231327440. Its totient is φ = 105920320.

The previous prime is 397201781. The next prime is 397201801. The reversal of 397201800 is 8102793.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (397201801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330402 + ... + 331601.

It is an arithmetic number, because the mean of its divisors is an integer number (25652655).

Almost surely, 2^397201800 is an apocalyptic number.

397201800 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397201800 is an abundant number, since it is smaller than the sum of its proper divisors (834125640).

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

397201800 is a wasteful number, since it uses less digits than its factorization.

397201800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662022 (or 662013 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 397201800 is about 19929.9222276455. The cubic root of 397201800 is about 735.0841682500.

The spelling of 397201800 in words is "three hundred ninety-seven million, two hundred one thousand, eight hundred".