1938128 has 20 divisors (see below), whose sum is σ = 3885540. Its totient is φ = 935424.

The previous prime is 1938113. The next prime is 1938149. The reversal of 1938128 is 8218391.

It can be written as a sum of positive squares in 2 ways, for example, as 1459264 + 478864 = 1208^2 + 692^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1938094 and 1938103.

It is a congruent number.

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, 1625 + ... + 2552.

It is an arithmetic number, because the mean of its divisors is an integer number (194277).

2^1938128 is an apocalyptic number.

It is an amenable number.

1938128 is an abundant number, since it is smaller than the sum of its proper divisors (1947412).

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

1938128 is a wasteful number, since it uses less digits than its factorization.

1938128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214 (or 4208 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 1938128 is about 1392.1666566902. The cubic root of 1938128 is about 124.6792416165.

The spelling of 1938128 in words is "one million, nine hundred thirty-eight thousand, one hundred twenty-eight".