18965428 has 12 divisors (see below), whose sum is σ = 34260352. Its totient is φ = 9176760.

The previous prime is 18965407. The next prime is 18965447. The reversal of 18965428 is 82456981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 76350 + ... + 76597.

Almost surely, 2^18965428 is an apocalyptic number.

It is an amenable number.

18965428 is a deficient number, since it is larger than the sum of its proper divisors (15294924).

18965428 is a wasteful number, since it uses less digits than its factorization.

18965428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152982 (or 152980 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 18965428 is about 4354.9314575548. The cubic root of 18965428 is about 266.6782210271.

The spelling of 18965428 in words is "eighteen million, nine hundred sixty-five thousand, four hundred twenty-eight".