19036728 has 64 divisors (see below), whose sum is σ = 54604800. Its totient is φ = 6138720.

The previous prime is 19036723. The next prime is 19036757. The reversal of 19036728 is 82763091.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 19036692 and 19036701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19036723) 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, 5275 + ... + 8117.

It is an arithmetic number, because the mean of its divisors is an integer number (853200).

Almost surely, 2^19036728 is an apocalyptic number.

19036728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19036728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27302400).

19036728 is an abundant number, since it is smaller than the sum of its proper divisors (35568072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19036728 is a wasteful number, since it uses less digits than its factorization.

19036728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889 (or 2879 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 19036728 is about 4363.1099000598. The cubic root of 19036728 is about 267.0119928965.

The spelling of 19036728 in words is "nineteen million, thirty-six thousand, seven hundred twenty-eight".