1938728 has 16 divisors (see below), whose sum is σ = 3965760. Its totient is φ = 881200.

The previous prime is 1938719. The next prime is 1938743. The reversal of 1938728 is 8278391.

It is a junction number, because it is equal to n+sod(n) for n = 1938691 and 1938700.

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, 10928 + ... + 11103.

It is an arithmetic number, because the mean of its divisors is an integer number (247860).

2^1938728 is an apocalyptic number.

It is an amenable number.

1938728 is an abundant number, since it is smaller than the sum of its proper divisors (2027032).

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

1938728 is a wasteful number, since it uses less digits than its factorization.

1938728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22048 (or 22044 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 1938728 is about 1392.3821314567. The cubic root of 1938728 is about 124.6921062341.

The spelling of 1938728 in words is "one million, nine hundred thirty-eight thousand, seven hundred twenty-eight".