189528015 has 16 divisors (see below), whose sum is σ = 306249696. Its totient is φ = 100080000.

The previous prime is 189528011. The next prime is 189528041. The reversal of 189528015 is 510825981.

It is not a de Polignac number, because 189528015 - 2² = 189528011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189528011) 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, 61036 + ... + 64065.

It is an arithmetic number, because the mean of its divisors is an integer number (19140606).

Almost surely, 2^189528015 is an apocalyptic number.

189528015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189528015 is a deficient number, since it is larger than the sum of its proper divisors (116721681).

189528015 is a wasteful number, since it uses less digits than its factorization.

189528015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125210.

The product of its (nonzero) digits is 28800, while the sum is 39.

The square root of 189528015 is about 13766.9174109530. The cubic root of 189528015 is about 574.4132792800.

The spelling of 189528015 in words is "one hundred eighty-nine million, five hundred twenty-eight thousand, fifteen".