19428429 has 16 divisors (see below), whose sum is σ = 26353152. Its totient is φ = 12730368.

The previous prime is 19428427. The next prime is 19428443. The reversal of 19428429 is 92482491.

It is not a de Polignac number, because 19428429 - 2¹ = 19428427 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19428427) 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, 75469 + ... + 75725.

It is an arithmetic number, because the mean of its divisors is an integer number (1647072).

Almost surely, 2^19428429 is an apocalyptic number.

It is an amenable number.

19428429 is a deficient number, since it is larger than the sum of its proper divisors (6924723).

19428429 is a wasteful number, since it uses less digits than its factorization.

19428429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596.

The product of its digits is 41472, while the sum is 39.

The square root of 19428429 is about 4407.7691636473. The cubic root of 19428429 is about 268.8309261248.

The spelling of 19428429 in words is "nineteen million, four hundred twenty-eight thousand, four hundred twenty-nine".