19428535 has 16 divisors (see below), whose sum is σ = 28213056. Its totient is φ = 12538368.

The previous prime is 19428533. The next prime is 19428551. The reversal of 19428535 is 53582491.

It is a cyclic number.

It is not a de Polignac number, because 19428535 - 2¹ = 19428533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19428494 and 19428503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19428533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15732 + ... + 16921.

It is an arithmetic number, because the mean of its divisors is an integer number (1763316).

Almost surely, 2^19428535 is an apocalyptic number.

19428535 is a deficient number, since it is larger than the sum of its proper divisors (8784521).

19428535 is a wasteful number, since it uses less digits than its factorization.

19428535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32682.

The product of its digits is 43200, while the sum is 37.

The square root of 19428535 is about 4407.7811878540. The cubic root of 19428535 is about 268.8314150308.

The spelling of 19428535 in words is "nineteen million, four hundred twenty-eight thousand, five hundred thirty-five".