394020288 has 210 divisors, whose sum is σ = 1245464616. Its totient is φ = 123144192.

The previous prime is 394020287. The next prime is 394020293. The reversal of 394020288 is 882020493.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394020281) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1498045 + ... + 1498307.

Almost surely, 2^394020288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394020288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622732308).

394020288 is an abundant number, since it is smaller than the sum of its proper divisors (851444328).

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

394020288 is a wasteful number, since it uses less digits than its factorization.

394020288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 394020288 is about 19849.9442820377. The cubic root of 394020288 is about 733.1162758886.

The spelling of 394020288 in words is "three hundred ninety-four million, twenty thousand, two hundred eighty-eight".