394660224 has 192 divisors, whose sum is σ = 1312740000. Its totient is φ = 111476736.

The previous prime is 394660213. The next prime is 394660249. The reversal of 394660224 is 422066493.

394660224 is a `hidden beast` number, since 3 + 9 + 46 + 602 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 878752 + ... + 879200.

Almost surely, 2^394660224 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 394660224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (656370000).

394660224 is an abundant number, since it is smaller than the sum of its proper divisors (918079776).

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

394660224 is a wasteful number, since it uses less digits than its factorization.

394660224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 394660224 is about 19866.0570823704. The cubic root of 394660224 is about 733.5129506763.

The spelling of 394660224 in words is "three hundred ninety-four million, six hundred sixty thousand, two hundred twenty-four".