189622656 has 96 divisors (see below), whose sum is σ = 548725320. Its totient is φ = 62853120.

The previous prime is 189622651. The next prime is 189622687. The reversal of 189622656 is 656226981.

189622656 is a `hidden beast` number, since 18 + 9 + 622 + 6 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189622651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277291 + ... + 277973.

Almost surely, 2^189622656 is an apocalyptic number.

189622656 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 189622656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274362660).

189622656 is an abundant number, since it is smaller than the sum of its proper divisors (359102664).

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

189622656 is a wasteful number, since it uses less digits than its factorization.

189622656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944 (or 929 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 189622656 is about 13770.3542438094. The cubic root of 189622656 is about 574.5088746479.

The spelling of 189622656 in words is "one hundred eighty-nine million, six hundred twenty-two thousand, six hundred fifty-six".