397433250 has 128 divisors (see below), whose sum is σ = 1115412480. Its totient is φ = 104716800.

The previous prime is 397433233. The next prime is 397433251. The reversal of 397433250 is 52334793.

It is not an unprimeable number, because it can be changed into a prime (397433251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 654447 + ... + 655053.

It is an arithmetic number, because the mean of its divisors is an integer number (8714160).

Almost surely, 2^397433250 is an apocalyptic number.

397433250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 397433250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557706240).

397433250 is an abundant number, since it is smaller than the sum of its proper divisors (717979230).

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

397433250 is a wasteful number, since it uses less digits than its factorization.

397433250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The square root of 397433250 is about 19935.7279776787. The cubic root of 397433250 is about 735.2269186902.

The spelling of 397433250 in words is "three hundred ninety-seven million, four hundred thirty-three thousand, two hundred fifty".