397725000 has 96 divisors (see below), whose sum is σ = 1243045440. Its totient is φ = 106040000.

The previous prime is 397724983. The next prime is 397725023. The reversal of 397725000 is 527793.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72349 + ... + 77651.

It is an arithmetic number, because the mean of its divisors is an integer number (12948390).

Almost surely, 2^397725000 is an apocalyptic number.

397725000 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 397725000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621522720).

397725000 is an abundant number, since it is smaller than the sum of its proper divisors (845320440).

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

397725000 is an equidigital number, since it uses as much as digits as its factorization.

397725000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5337 (or 5313 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 397725000 is about 19943.0439000670. The cubic root of 397725000 is about 735.4067811679.

The spelling of 397725000 in words is "three hundred ninety-seven million, seven hundred twenty-five thousand".