393189120 has 288 divisors, whose sum is σ = 1444208640. Its totient is φ = 101191680.

The previous prime is 393189113. The next prime is 393189127. The reversal of 393189120 is 21981393.

It is an interprime number because it is at equal distance from previous prime (393189113) and next prime (393189127).

It is a tau number, because it is divible by the number of its divisors (288).

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 (393189127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1071177 + ... + 1071543.

Almost surely, 2^393189120 is an apocalyptic number.

393189120 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 393189120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722104320).

393189120 is an abundant number, since it is smaller than the sum of its proper divisors (1051019520).

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

393189120 is a wasteful number, since it uses less digits than its factorization.

393189120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 393189120 is about 19828.9969489130. The cubic root of 393189120 is about 732.6004211044.

The spelling of 393189120 in words is "three hundred ninety-three million, one hundred eighty-nine thousand, one hundred twenty".