428173419 has 16 divisors (see below), whose sum is σ = 575722784. Its totient is φ = 283046400.

The previous prime is 428173409. The next prime is 428173433. The reversal of 428173419 is 914371824.

It is not a de Polignac number, because 428173419 - 2¹¹ = 428171371 is a prime.

It is a super-2 number, since 2×428173419² = 366664953476299122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428173409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227667 + ... + 229539.

It is an arithmetic number, because the mean of its divisors is an integer number (35982674).

Almost surely, 2^428173419 is an apocalyptic number.

428173419 is a deficient number, since it is larger than the sum of its proper divisors (147549365).

428173419 is a wasteful number, since it uses less digits than its factorization.

428173419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478.

The product of its digits is 48384, while the sum is 39.

The square root of 428173419 is about 20692.3517029844. The cubic root of 428173419 is about 753.7139746099.

The spelling of 428173419 in words is "four hundred twenty-eight million, one hundred seventy-three thousand, four hundred nineteen".