189227520 has 240 divisors, whose sum is σ = 674099712. Its totient is φ = 49029120.

The previous prime is 189227501. The next prime is 189227537. The reversal of 189227520 is 25722981.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 990625 + ... + 990815.

Almost surely, 2^189227520 is an apocalyptic number.

189227520 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 189227520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337049856).

189227520 is an abundant number, since it is smaller than the sum of its proper divisors (484872192).

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

189227520 is a wasteful number, since it uses less digits than its factorization.

189227520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 189227520 is about 13755.9994184356. Note that the first 3 decimals coincide. The cubic root of 189227520 is about 574.1095429665.

The spelling of 189227520 in words is "one hundred eighty-nine million, two hundred twenty-seven thousand, five hundred twenty".