189621632 has 32 divisors (see below), whose sum is σ = 381255600. Its totient is φ = 93934080.

The previous prime is 189621631. The next prime is 189621643. The reversal of 189621632 is 236126981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189621631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7157 + ... + 20747.

Almost surely, 2^189621632 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 189621632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190627800).

189621632 is an abundant number, since it is smaller than the sum of its proper divisors (191633968).

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

189621632 is a wasteful number, since it uses less digits than its factorization.

189621632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13714 (or 13702 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 189621632 is about 13770.3170624354. The cubic root of 189621632 is about 574.5078404920.

The spelling of 189621632 in words is "one hundred eighty-nine million, six hundred twenty-one thousand, six hundred thirty-two".