1881928 has 8 divisors (see below), whose sum is σ = 3528630. Its totient is φ = 940960.

The previous prime is 1881907. The next prime is 1881937. The reversal of 1881928 is 8291881.

It can be written as a sum of positive squares in only one way, i.e., 956484 + 925444 = 978^2 + 962^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117613 + ... + 117628.

2^1881928 is an apocalyptic number.

It is an amenable number.

1881928 is a deficient number, since it is larger than the sum of its proper divisors (1646702).

1881928 is a wasteful number, since it uses less digits than its factorization.

1881928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235247 (or 235243 counting only the distinct ones).

The product of its digits is 9216, while the sum is 37.

The square root of 1881928 is about 1371.8338091766. The cubic root of 1881928 is about 123.4622918638.

It can be divided in two parts, 1881 and 928, that added together give a square (2809 = 53²).

The spelling of 1881928 in words is "one million, eight hundred eighty-one thousand, nine hundred twenty-eight".