19028139 has 16 divisors (see below), whose sum is σ = 28761600. Its totient is φ = 11092896.

The previous prime is 19028137. The next prime is 19028159. The reversal of 19028139 is 93182091.

It is not a de Polignac number, because 19028139 - 2¹ = 19028137 is a prime.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (19028137) 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 15 ways as a sum of consecutive naturals, for example, 12099 + ... + 13580.

It is an arithmetic number, because the mean of its divisors is an integer number (1797600).

Almost surely, 2^19028139 is an apocalyptic number.

19028139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

19028139 is a deficient number, since it is larger than the sum of its proper divisors (9733461).

19028139 is a wasteful number, since it uses less digits than its factorization.

19028139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25714.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 19028139 is about 4362.1255140126. The cubic root of 19028139 is about 266.9718299896.

The spelling of 19028139 in words is "nineteen million, twenty-eight thousand, one hundred thirty-nine".