189942824 has 16 divisors (see below), whose sum is σ = 356310900. Its totient is φ = 94926592.

The previous prime is 189942773. The next prime is 189942827. The reversal of 189942824 is 428249981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 183602500 + 6340324 = 13550^2 + 2518^2 .

It is not an unprimeable number, because it can be changed into a prime (189942827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18512 + ... + 26880.

Almost surely, 2^189942824 is an apocalyptic number.

It is an amenable number.

189942824 is a deficient number, since it is larger than the sum of its proper divisors (166368076).

189942824 is a wasteful number, since it uses less digits than its factorization.

189942824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11212 (or 11208 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 189942824 is about 13781.9746045333. The cubic root of 189942824 is about 574.8320356285.

The spelling of 189942824 in words is "one hundred eighty-nine million, nine hundred forty-two thousand, eight hundred twenty-four".