428212428 has 24 divisors (see below), whose sum is σ = 1141900032. Its totient is φ = 122346384.

The previous prime is 428212423. The next prime is 428212511. The reversal of 428212428 is 824212824.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (428212423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2548800 + ... + 2548967.

It is an arithmetic number, because the mean of its divisors is an integer number (47579168).

Almost surely, 2^428212428 is an apocalyptic number.

It is an amenable number.

428212428 is an abundant number, since it is smaller than the sum of its proper divisors (713687604).

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

428212428 is a wasteful number, since it uses less digits than its factorization.

428212428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097781 (or 5097779 counting only the distinct ones).

The product of its digits is 16384, while the sum is 33.

The square root of 428212428 is about 20693.2942761659. The cubic root of 428212428 is about 753.7368631050.

The spelling of 428212428 in words is "four hundred twenty-eight million, two hundred twelve thousand, four hundred twenty-eight".