189020656 has 40 divisors (see below), whose sum is σ = 403438464. Its totient is φ = 85076160.

The previous prime is 189020641. The next prime is 189020659. The reversal of 189020656 is 656020981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189020659) 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 7 ways as a sum of consecutive naturals, for example, 12915 + ... + 23341.

Almost surely, 2^189020656 is an apocalyptic number.

189020656 is a gapful number since it is divisible by the number (16) 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 189020656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201719232).

189020656 is an abundant number, since it is smaller than the sum of its proper divisors (214417808).

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

189020656 is a wasteful number, since it uses less digits than its factorization.

189020656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10549 (or 10543 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 189020656 is about 13748.4783157992. The cubic root of 189020656 is about 573.9002606873.

The spelling of 189020656 in words is "one hundred eighty-nine million, twenty thousand, six hundred fifty-six".