1938628 has 12 divisors (see below), whose sum is σ = 3423420. Its totient is φ = 960512.

The previous prime is 1938623. The next prime is 1938637. The reversal of 1938628 is 8268391.

It can be written as a sum of positive squares in 2 ways, for example, as 861184 + 1077444 = 928^2 + 1038^2 .

It is not an unprimeable number, because it can be changed into a prime (1938623) 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, 1693 + ... + 2596.

It is an arithmetic number, because the mean of its divisors is an integer number (285285).

2^1938628 is an apocalyptic number.

It is an amenable number.

1938628 is a deficient number, since it is larger than the sum of its proper divisors (1484792).

1938628 is a wasteful number, since it uses less digits than its factorization.

1938628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406 (or 4404 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 1938628 is about 1392.3462213114. The cubic root of 1938628 is about 124.6899623155.

The spelling of 1938628 in words is "one million, nine hundred thirty-eight thousand, six hundred twenty-eight".