189470688 has 192 divisors, whose sum is σ = 587865600. Its totient is φ = 52828160.

The previous prime is 189470683. The next prime is 189470693. The reversal of 189470688 is 886074981.

189470688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (189470683) and next prime (189470693).

It is a super-2 number, since 2×189470688² = 71798283222386688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189470688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189470681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 704218 + ... + 704486.

It is an arithmetic number, because the mean of its divisors is an integer number (3061800).

Almost surely, 2^189470688 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 189470688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293932800).

189470688 is an abundant number, since it is smaller than the sum of its proper divisors (398394912).

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

189470688 is a wasteful number, since it uses less digits than its factorization.

189470688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 51.

The square root of 189470688 is about 13764.8351969793. The cubic root of 189470688 is about 574.3553587123.

The spelling of 189470688 in words is "one hundred eighty-nine million, four hundred seventy thousand, six hundred eighty-eight".