428213619 has 6 divisors (see below), whose sum is σ = 618530796. Its totient is φ = 285475740.

The previous prime is 428213603. The next prime is 428213627. The reversal of 428213619 is 916312824.

428213619 is a `hidden beast` number, since 4 + 28 + 2 + 13 + 619 = 666.

It is not a de Polignac number, because 428213619 - 2⁴ = 428213603 is a prime.

It is a super-2 number, since 2×428213619² = 366733806994154322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428213689) 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 5 ways as a sum of consecutive naturals, for example, 23789637 + ... + 23789654.

It is an arithmetic number, because the mean of its divisors is an integer number (103088466).

Almost surely, 2^428213619 is an apocalyptic number.

428213619 is a deficient number, since it is larger than the sum of its proper divisors (190317177).

428213619 is a wasteful number, since it uses less digits than its factorization.

428213619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47579297 (or 47579294 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 428213619 is about 20693.3230535842. The cubic root of 428213619 is about 753.7375619013.

The spelling of 428213619 in words is "four hundred twenty-eight million, two hundred thirteen thousand, six hundred nineteen".