189252784 has 20 divisors (see below), whose sum is σ = 419059984. Its totient is φ = 81108288.

The previous prime is 189252773. The next prime is 189252793. The reversal of 189252784 is 487252981.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 844767 + ... + 844990.

Almost surely, 2^189252784 is an apocalyptic number.

189252784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189252784 is an abundant number, since it is smaller than the sum of its proper divisors (229807200).

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

189252784 is a wasteful number, since it uses less digits than its factorization.

189252784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689772 (or 1689766 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 189252784 is about 13756.9176780266. The cubic root of 189252784 is about 574.1350918543.

It can be divided in two parts, 189252 and 784, that added together give a triangular number (190036 = T₆₁₆).

The spelling of 189252784 in words is "one hundred eighty-nine million, two hundred fifty-two thousand, seven hundred eighty-four".