397052268 has 12 divisors (see below), whose sum is σ = 926455320. Its totient is φ = 132350752.
The previous prime is 397052263. The next prime is 397052269. The reversal of 397052268 is 862250793.
It is a tau number, because it is divible by the number of its divisors (12).
It is not an unprimeable number, because it can be changed into a prime (397052261) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16543833 + ... + 16543856.
It is an arithmetic number, because the mean of its divisors is an integer number (77204610).
Almost surely, 2397052268 is an apocalyptic number.
It is an amenable number.
397052268 is an abundant number, since it is smaller than the sum of its proper divisors (529403052).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
397052268 is a wasteful number, since it uses less digits than its factorization.
397052268 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 33087696 (or 33087694 counting only the distinct ones).
The product of its (nonzero) digits is 181440, while the sum is 42.
The square root of 397052268 is about 19926.1704298643. The cubic root of 397052268 is about 734.9919125400.
The spelling of 397052268 in words is "three hundred ninety-seven million, fifty-two thousand, two hundred sixty-eight".
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