19284428 has 12 divisors (see below), whose sum is σ = 33801432. Its totient is φ = 9626880.

The previous prime is 19284427. The next prime is 19284451. The reversal of 19284428 is 82448291.

It is a junction number, because it is equal to n+sod(n) for n = 19284391 and 19284400.

It is not an unprimeable number, because it can be changed into a prime (19284427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725 + ... + 6252.

It is an arithmetic number, because the mean of its divisors is an integer number (2816786).

Almost surely, 2^19284428 is an apocalyptic number.

It is an amenable number.

19284428 is a deficient number, since it is larger than the sum of its proper divisors (14517004).

19284428 is a wasteful number, since it uses less digits than its factorization.

19284428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7672 (or 7670 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 19284428 is about 4391.4038757555. The cubic root of 19284428 is about 268.1650983909.

The spelling of 19284428 in words is "nineteen million, two hundred eighty-four thousand, four hundred twenty-eight".