428226428 has 24 divisors (see below), whose sum is σ = 861716352. Its totient is φ = 182397744.

The previous prime is 428226367. The next prime is 428226451. The reversal of 428226428 is 824622824.

It is a junction number, because it is equal to n+sod(n) for n = 428226391 and 428226400.

It is a congruent number.

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, 42350 + ... + 51477.

It is an arithmetic number, because the mean of its divisors is an integer number (35904848).

Almost surely, 2^428226428 is an apocalyptic number.

It is an amenable number.

428226428 is an abundant number, since it is smaller than the sum of its proper divisors (433489924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428226428 is a wasteful number, since it uses less digits than its factorization.

428226428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94001 (or 93999 counting only the distinct ones).

The product of its digits is 98304, while the sum is 38.

The square root of 428226428 is about 20693.6325472354. The cubic root of 428226428 is about 753.7450772532.

The spelling of 428226428 in words is "four hundred twenty-eight million, two hundred twenty-six thousand, four hundred twenty-eight".