389630072 has 64 divisors (see below), whose sum is σ = 860025600. Its totient is φ = 163768320.

The previous prime is 389630071. The next prime is 389630099. The reversal of 389630072 is 270036983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389630071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51254 + ... + 58362.

It is an arithmetic number, because the mean of its divisors is an integer number (13437900).

Almost surely, 2^389630072 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 389630072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430012800).

389630072 is an abundant number, since it is smaller than the sum of its proper divisors (470395528).

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

389630072 is a wasteful number, since it uses less digits than its factorization.

389630072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7176 (or 7172 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 389630072 is about 19739.0494198682. The cubic root of 389630072 is about 730.3832803055.

The spelling of 389630072 in words is "three hundred eighty-nine million, six hundred thirty thousand, seventy-two".