19028240 has 80 divisors (see below), whose sum is σ = 55175040. Its totient is φ = 5928960.

The previous prime is 19028227. The next prime is 19028257. The reversal of 19028240 is 4282091.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4616 + ... + 7704.

It is an arithmetic number, because the mean of its divisors is an integer number (689688).

Almost surely, 2^19028240 is an apocalyptic number.

19028240 is a gapful number since it is divisible by the number (10) 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 19028240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27587520).

19028240 is an abundant number, since it is smaller than the sum of its proper divisors (36146800).

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

19028240 is a wasteful number, since it uses less digits than its factorization.

19028240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120 (or 3114 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 19028240 is about 4362.1370909223. The cubic root of 19028240 is about 266.9723023446.

The spelling of 19028240 in words is "nineteen million, twenty-eight thousand, two hundred forty".