394024320 has 192 divisors, whose sum is σ = 1382275440. Its totient is φ = 103403520.

The previous prime is 394024297. The next prime is 394024321. The reversal of 394024320 is 23420493.

It is a happy number.

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

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394024321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 385410 + ... + 386430.

Almost surely, 2^394024320 is an apocalyptic number.

394024320 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 394024320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691137720).

394024320 is an abundant number, since it is smaller than the sum of its proper divisors (988251120).

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

394024320 is a wasteful number, since it uses less digits than its factorization.

394024320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 394024320 is about 19850.0458437758. The cubic root of 394024320 is about 733.1187765338.

The spelling of 394024320 in words is "three hundred ninety-four million, twenty-four thousand, three hundred twenty".