1945428 has 12 divisors (see below), whose sum is σ = 4539360. Its totient is φ = 648472.

The previous prime is 1945403. The next prime is 1945439. The reversal of 1945428 is 8245491.

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

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 3 ways as a sum of consecutive naturals, for example, 81048 + ... + 81071.

It is an arithmetic number, because the mean of its divisors is an integer number (378280).

2^1945428 is an apocalyptic number.

It is an amenable number.

1945428 is an abundant number, since it is smaller than the sum of its proper divisors (2593932).

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

1945428 is a wasteful number, since it uses less digits than its factorization.

1945428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162126 (or 162124 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 1945428 is about 1394.7860050918. The cubic root of 1945428 is about 124.8355811597.

The spelling of 1945428 in words is "one million, nine hundred forty-five thousand, four hundred twenty-eight".