389231700 has 288 divisors, whose sum is σ = 1360246272. Its totient is φ = 84672000.

The previous prime is 389231683. The next prime is 389231729. The reversal of 389231700 is 7132983.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1844595 + ... + 1844805.

Almost surely, 2^389231700 is an apocalyptic number.

389231700 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 389231700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680123136).

389231700 is an abundant number, since it is smaller than the sum of its proper divisors (971014572).

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

389231700 is a wasteful number, since it uses less digits than its factorization.

389231700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 389231700 is about 19728.9558770858. The cubic root of 389231700 is about 730.1342719173.

The spelling of 389231700 in words is "three hundred eighty-nine million, two hundred thirty-one thousand, seven hundred".