189939360 has 192 divisors, whose sum is σ = 656208000. Its totient is φ = 45895680.

The previous prime is 189939353. The next prime is 189939383. The reversal of 189939360 is 63939981.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380391 + ... + 380889.

It is an arithmetic number, because the mean of its divisors is an integer number (3417750).

Almost surely, 2^189939360 is an apocalyptic number.

189939360 is a gapful number since it is divisible by the number (10) 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 189939360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328104000).

189939360 is an abundant number, since it is smaller than the sum of its proper divisors (466268640).

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

189939360 is a wasteful number, since it uses less digits than its factorization.

189939360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 189939360 is about 13781.8489325634. The cubic root of 189939360 is about 574.8285411905.

The spelling of 189939360 in words is "one hundred eighty-nine million, nine hundred thirty-nine thousand, three hundred sixty".