19140028 has 24 divisors (see below), whose sum is σ = 35692272. Its totient is φ = 8949504.

The previous prime is 19139999. The next prime is 19140059. The reversal of 19140028 is 82004191.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19139984 and 19140011.

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 7 ways as a sum of consecutive naturals, for example, 10951 + ... + 12577.

It is an arithmetic number, because the mean of its divisors is an integer number (1487178).

Almost surely, 2^19140028 is an apocalyptic number.

It is an amenable number.

19140028 is a deficient number, since it is larger than the sum of its proper divisors (16552244).

19140028 is a wasteful number, since it uses less digits than its factorization.

19140028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 19140028 is about 4374.9317708965. The cubic root of 19140028 is about 267.4940890184.

The spelling of 19140028 in words is "nineteen million, one hundred forty thousand, twenty-eight".