1805228428 has 12 divisors (see below), whose sum is σ = 3212695080. Its totient is φ = 887315552.

The previous prime is 1805228413. The next prime is 1805228441. The reversal of 1805228428 is 8248225081.

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, 3824401 + ... + 3824872.

It is an arithmetic number, because the mean of its divisors is an integer number (267724590).

Almost surely, 2^1805228428 is an apocalyptic number.

It is an amenable number.

1805228428 is a deficient number, since it is larger than the sum of its proper divisors (1407466652).

1805228428 is a wasteful number, since it uses less digits than its factorization.

1805228428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7649336 (or 7649334 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 40.

The square root of 1805228428 is about 42487.9798060581. The cubic root of 1805228428 is about 1217.6170515158.

The spelling of 1805228428 in words is "one billion, eight hundred five million, two hundred twenty-eight thousand, four hundred twenty-eight".