394870032 has 160 divisors (see below), whose sum is σ = 1201411200. Its totient is φ = 123959808.

The previous prime is 394870009. The next prime is 394870037. The reversal of 394870032 is 230078493.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 (394870037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 538338 + ... + 539070.

It is an arithmetic number, because the mean of its divisors is an integer number (7508820).

Almost surely, 2^394870032 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 394870032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (600705600).

394870032 is an abundant number, since it is smaller than the sum of its proper divisors (806541168).

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

394870032 is a wasteful number, since it uses less digits than its factorization.

394870032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 394870032 is about 19871.3369454599. The cubic root of 394870032 is about 733.6429102486.

The spelling of 394870032 in words is "three hundred ninety-four million, eight hundred seventy thousand, thirty-two".