189454020 has 96 divisors (see below), whose sum is σ = 625852416. Its totient is φ = 41904000.

The previous prime is 189454009. The next prime is 189454021. The reversal of 189454020 is 20454981.

189454020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (189454021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5745 + ... + 20295.

It is an arithmetic number, because the mean of its divisors is an integer number (6519296).

Almost surely, 2^189454020 is an apocalyptic number.

189454020 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 189454020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312926208).

189454020 is an abundant number, since it is smaller than the sum of its proper divisors (436398396).

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

189454020 is a wasteful number, since it uses less digits than its factorization.

189454020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14601 (or 14599 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 189454020 is about 13764.2297278126. The cubic root of 189454020 is about 574.3385159384.

The spelling of 189454020 in words is "one hundred eighty-nine million, four hundred fifty-four thousand, twenty".