428308430 has 32 divisors (see below), whose sum is σ = 847490688. Its totient is φ = 154554400.

The previous prime is 428308429. The next prime is 428308457. The reversal of 428308430 is 34803824.

It is a super-2 number, since 2×428308430² = 366896222418129800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452 + ... + 29271.

It is an arithmetic number, because the mean of its divisors is an integer number (26484084).

Almost surely, 2^428308430 is an apocalyptic number.

428308430 is a deficient number, since it is larger than the sum of its proper divisors (419182258).

428308430 is a wasteful number, since it uses less digits than its factorization.

428308430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29872.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 428308430 is about 20695.6137865008. The cubic root of 428308430 is about 753.7931862714.

The spelling of 428308430 in words is "four hundred twenty-eight million, three hundred eight thousand, four hundred thirty".