397528182 has 64 divisors (see below), whose sum is σ = 926069760. Its totient is φ = 126162432.

The previous prime is 397528177. The next prime is 397528193. The reversal of 397528182 is 281825793.

It is a happy number.

It is a super-3 number, since 3×397528182³ (a number of 27 digits) contains 333 as substring.

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 31 ways as a sum of consecutive naturals, for example, 326038 + ... + 327254.

It is an arithmetic number, because the mean of its divisors is an integer number (14469840).

Almost surely, 2^397528182 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397528182, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463034880).

397528182 is an abundant number, since it is smaller than the sum of its proper divisors (528541578).

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

397528182 is a wasteful number, since it uses less digits than its factorization.

397528182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514 (or 1508 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 397528182 is about 19938.1087869437. The cubic root of 397528182 is about 735.2854534717.

The spelling of 397528182 in words is "three hundred ninety-seven million, five hundred twenty-eight thousand, one hundred eighty-two".