189427104 has 72 divisors (see below), whose sum is σ = 543029760. Its totient is φ = 62633088.

The previous prime is 189427099. The next prime is 189427109. The reversal of 189427104 is 401724981.

It is an interprime number because it is at equal distance from previous prime (189427099) and next prime (189427109).

It is a tau number, because it is divible by the number of its divisors (72).

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 (189427109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33987 + ... + 39165.

It is an arithmetic number, because the mean of its divisors is an integer number (7542080).

Almost surely, 2^189427104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189427104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271514880).

189427104 is an abundant number, since it is smaller than the sum of its proper divisors (353602656).

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

189427104 is a wasteful number, since it uses less digits than its factorization.

189427104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322 (or 5311 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 189427104 is about 13763.2519413110. The cubic root of 189427104 is about 574.3113156224.

The spelling of 189427104 in words is "one hundred eighty-nine million, four hundred twenty-seven thousand, one hundred four".