189212976 has 80 divisors (see below), whose sum is σ = 554726400. Its totient is φ = 61722432.

The previous prime is 189212971. The next prime is 189212987. The reversal of 189212976 is 679212981.

It is not an unprimeable number, because it can be changed into a prime (189212971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15645 + ... + 24963.

It is an arithmetic number, because the mean of its divisors is an integer number (6934080).

Almost surely, 2^189212976 is an apocalyptic number.

189212976 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 189212976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277363200).

189212976 is an abundant number, since it is smaller than the sum of its proper divisors (365513424).

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

189212976 is a wasteful number, since it uses less digits than its factorization.

189212976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9383 (or 9371 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 189212976 is about 13755.4707662079. The cubic root of 189212976 is about 574.0948339306.

The spelling of 189212976 in words is "one hundred eighty-nine million, two hundred twelve thousand, nine hundred seventy-six".