189484020 has 144 divisors (see below), whose sum is σ = 635124672. Its totient is φ = 45342720.

The previous prime is 189483991. The next prime is 189484021. The reversal of 189484020 is 20484981.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189484021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163764 + ... + 164916.

It is an arithmetic number, because the mean of its divisors is an integer number (4410588).

Almost surely, 2^189484020 is an apocalyptic number.

189484020 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 189484020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317562336).

189484020 is an abundant number, since it is smaller than the sum of its proper divisors (445640652).

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

189484020 is a wasteful number, since it uses less digits than its factorization.

189484020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 189484020 is about 13765.3194659623. The cubic root of 189484020 is about 574.3688297952.

The spelling of 189484020 in words is "one hundred eighty-nine million, four hundred eighty-four thousand, twenty".