1801428 has 24 divisors (see below), whose sum is σ = 4425120. Its totient is φ = 568800.

The previous prime is 1801411. The next prime is 1801433. The reversal of 1801428 is 8241081.

It is a junction number, because it is equal to n+sod(n) for n = 1801398 and 1801407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3723 + ... + 4178.

It is an arithmetic number, because the mean of its divisors is an integer number (184380).

2^1801428 is an apocalyptic number.

It is an amenable number.

1801428 is an abundant number, since it is smaller than the sum of its proper divisors (2623692).

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

1801428 is a wasteful number, since it uses less digits than its factorization.

1801428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927 (or 7925 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1801428 is about 1342.1728651705. The cubic root of 1801428 is about 121.6761994991.

The spelling of 1801428 in words is "one million, eight hundred one thousand, four hundred twenty-eight".