394820352 has 108 divisors (see below), whose sum is σ = 1172458840. Its totient is φ = 131056128.

The previous prime is 394820341. The next prime is 394820353. The reversal of 394820352 is 253028493.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (108).

It is a super-2 number, since 2×394820352² = 311766220706807808, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (394820353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1651849 + ... + 1652087.

Almost surely, 2^394820352 is an apocalyptic number.

394820352 is a gapful number since it is divisible by the number (32) 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 394820352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586229420).

394820352 is an abundant number, since it is smaller than the sum of its proper divisors (777638488).

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

394820352 is an frugal number, since it uses more digits than its factorization.

394820352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 394820352 is about 19870.0868644302. The cubic root of 394820352 is about 733.6121415522.

The spelling of 394820352 in words is "three hundred ninety-four million, eight hundred twenty thousand, three hundred fifty-two".