394221120 has 112 divisors (see below), whose sum is σ = 1317589440. Its totient is φ = 99588096.

The previous prime is 394221103. The next prime is 394221133. The reversal of 394221120 is 21122493.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7434 + ... + 29046.

Almost surely, 2^394221120 is an apocalyptic number.

394221120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658794720).

394221120 is an abundant number, since it is smaller than the sum of its proper divisors (923368320).

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

394221120 is a wasteful number, since it uses less digits than its factorization.

394221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21652 (or 21642 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 394221120 is about 19855.0023923444. The cubic root of 394221120 is about 733.2408111005.

The spelling of 394221120 in words is "three hundred ninety-four million, two hundred twenty-one thousand, one hundred twenty".