389873280 has 128 divisors (see below), whose sum is σ = 1249214400. Its totient is φ = 103424000.

The previous prime is 389873243. The next prime is 389873347. The reversal of 389873280 is 82378983.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481516 + ... + 482324.

Almost surely, 2^389873280 is an apocalyptic number.

389873280 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 389873280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624607200).

389873280 is an abundant number, since it is smaller than the sum of its proper divisors (859341120).

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

389873280 is a wasteful number, since it uses less digits than its factorization.

389873280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 389873280 is about 19745.2090391568. The cubic root of 389873280 is about 730.5352176792.

The spelling of 389873280 in words is "three hundred eighty-nine million, eight hundred seventy-three thousand, two hundred eighty".