189206688 has 48 divisors (see below), whose sum is σ = 541822176. Its totient is φ = 57335040.

The previous prime is 189206681. The next prime is 189206707. The reversal of 189206688 is 886602981.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (189206681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88531 + ... + 90642.

It is an arithmetic number, because the mean of its divisors is an integer number (11287962).

Almost surely, 2^189206688 is an apocalyptic number.

It is an amenable number.

189206688 is an abundant number, since it is smaller than the sum of its proper divisors (352615488).

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

189206688 is a wasteful number, since it uses less digits than its factorization.

189206688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179197 (or 179189 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 189206688 is about 13755.2422007030. The cubic root of 189206688 is about 574.0884743451.

The spelling of 189206688 in words is "one hundred eighty-nine million, two hundred six thousand, six hundred eighty-eight".