1228582428 has 12 divisors (see below), whose sum is σ = 2866692360. Its totient is φ = 409527472.

The previous prime is 1228582409. The next prime is 1228582441. The reversal of 1228582428 is 8242858221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1228582428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51190923 + ... + 51190946.

It is an arithmetic number, because the mean of its divisors is an integer number (238891030).

Almost surely, 2^1228582428 is an apocalyptic number.

It is an amenable number.

1228582428 is an abundant number, since it is smaller than the sum of its proper divisors (1638109932).

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

1228582428 is a wasteful number, since it uses less digits than its factorization.

1228582428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102381876 (or 102381874 counting only the distinct ones).

The product of its digits is 163840, while the sum is 42.

The square root of 1228582428 is about 35051.1401811696. The cubic root of 1228582428 is about 1071.0295003125.

The spelling of 1228582428 in words is "one billion, two hundred twenty-eight million, five hundred eighty-two thousand, four hundred twenty-eight".