389216016 has 240 divisors, whose sum is σ = 1321433280. Its totient is φ = 110714688.

The previous prime is 389215997. The next prime is 389216033. The reversal of 389216016 is 610612983.

It is a super-2 number, since 2×389216016² = 302978214221824512, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1714495 + ... + 1714721.

It is an arithmetic number, because the mean of its divisors is an integer number (5505972).

Almost surely, 2^389216016 is an apocalyptic number.

389216016 is a gapful number since it is divisible by the number (36) 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 389216016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660716640).

389216016 is an abundant number, since it is smaller than the sum of its proper divisors (932217264).

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

389216016 is an equidigital number, since it uses as much as digits as its factorization.

389216016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 389216016 is about 19728.5583862582. The cubic root of 389216016 is about 730.1244649225.

Adding to 389216016 its reverse (610612983), we get a palindrome (999828999).

The spelling of 389216016 in words is "three hundred eighty-nine million, two hundred sixteen thousand, sixteen".