189930428 has 12 divisors (see below), whose sum is σ = 343100352. Its totient is φ = 91901760.

The previous prime is 189930427. The next prime is 189930437. The reversal of 189930428 is 824039981.

It is a happy number.

It is a super-3 number, since 3×189930428³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189930421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765725 + ... + 765972.

It is an arithmetic number, because the mean of its divisors is an integer number (28591696).

Almost surely, 2^189930428 is an apocalyptic number.

It is an amenable number.

189930428 is a deficient number, since it is larger than the sum of its proper divisors (153169924).

189930428 is a wasteful number, since it uses less digits than its factorization.

189930428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531732 (or 1531730 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 189930428 is about 13781.5248793448. The cubic root of 189930428 is about 574.8195305093.

The spelling of 189930428 in words is "one hundred eighty-nine million, nine hundred thirty thousand, four hundred twenty-eight".