389738250 has 256 divisors, whose sum is σ = 1226534400. Its totient is φ = 90720000.

The previous prime is 389738249. The next prime is 389738287. The reversal of 389738250 is 52837983.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 389738196 and 389738205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2153160 + ... + 2153340.

It is an arithmetic number, because the mean of its divisors is an integer number (4791150).

Almost surely, 2^389738250 is an apocalyptic number.

389738250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 389738250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613267200).

389738250 is an abundant number, since it is smaller than the sum of its proper divisors (836796150).

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

389738250 is a wasteful number, since it uses less digits than its factorization.

389738250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 389738250 is about 19741.7894325717. The cubic root of 389738250 is about 730.4508692803.

The spelling of 389738250 in words is "three hundred eighty-nine million, seven hundred thirty-eight thousand, two hundred fifty".