389768736 has 240 divisors, whose sum is σ = 1270533600. Its totient is φ = 104315904.

The previous prime is 389768683. The next prime is 389768737. The reversal of 389768736 is 637867983.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389768737) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4379380 + ... + 4379468.

It is an arithmetic number, because the mean of its divisors is an integer number (5293890).

Almost surely, 2^389768736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389768736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635266800).

389768736 is an abundant number, since it is smaller than the sum of its proper divisors (880764864).

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

389768736 is an equidigital number, since it uses as much as digits as its factorization.

389768736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 120 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 57.

The square root of 389768736 is about 19742.5615359304. The cubic root of 389768736 is about 730.4699144938.

The spelling of 389768736 in words is "three hundred eighty-nine million, seven hundred sixty-eight thousand, seven hundred thirty-six".