189725280 has 48 divisors (see below), whose sum is σ = 597636144. Its totient is φ = 50593280.

The previous prime is 189725273. The next prime is 189725281. The reversal of 189725280 is 82527981.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189725281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197151 + ... + 198110.

It is an arithmetic number, because the mean of its divisors is an integer number (12450753).

Almost surely, 2^189725280 is an apocalyptic number.

189725280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189725280 is an abundant number, since it is smaller than the sum of its proper divisors (407910864).

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

189725280 is a wasteful number, since it uses less digits than its factorization.

189725280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395279 (or 395271 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 189725280 is about 13774.0800055757. The cubic root of 189725280 is about 574.6124975782.

The spelling of 189725280 in words is "one hundred eighty-nine million, seven hundred twenty-five thousand, two hundred eighty".