1887428 has 12 divisors (see below), whose sum is σ = 3314220. Its totient is φ = 940512.

The previous prime is 1887421. The next prime is 1887433. The reversal of 1887428 is 8247881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 228484 + 1658944 = 478^2 + 1288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1887391 and 1887400.

It is not an unprimeable number, because it can be changed into a prime (1887421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950 + ... + 2162.

It is an arithmetic number, because the mean of its divisors is an integer number (276185).

2^1887428 is an apocalyptic number.

It is an amenable number.

1887428 is a deficient number, since it is larger than the sum of its proper divisors (1426792).

1887428 is a wasteful number, since it uses less digits than its factorization.

1887428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606 (or 1604 counting only the distinct ones).

The product of its digits is 28672, while the sum is 38.

The square root of 1887428 is about 1373.8369626706. The cubic root of 1887428 is about 123.5824491650.

The spelling of 1887428 in words is "one million, eight hundred eighty-seven thousand, four hundred twenty-eight".