19428545 has 8 divisors (see below), whose sum is σ = 24541440. Its totient is φ = 14724720.

The previous prime is 19428533. The next prime is 19428551. The reversal of 19428545 is 54582491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19428545 - 2²⁴ = 2651329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19428499 and 19428508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102161 + ... + 102350.

It is an arithmetic number, because the mean of its divisors is an integer number (3067680).

Almost surely, 2^19428545 is an apocalyptic number.

It is an amenable number.

19428545 is a deficient number, since it is larger than the sum of its proper divisors (5112895).

19428545 is a wasteful number, since it uses less digits than its factorization.

19428545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204535.

The product of its digits is 57600, while the sum is 38.

The square root of 19428545 is about 4407.7823222115. The cubic root of 19428545 is about 268.8314611539.

The spelling of 19428545 in words is "nineteen million, four hundred twenty-eight thousand, five hundred forty-five".