1939028 has 36 divisors (see below), whose sum is σ = 4256532. Its totient is φ = 766080.

The previous prime is 1939009. The next prime is 1939033. The reversal of 1939028 is 8209391.

It can be written as a sum of positive squares in 2 ways, for example, as 94864 + 1844164 = 308^2 + 1358^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1938985 and 1939003.

It is a congruent number.

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 in 11 ways as a sum of consecutive naturals, for example, 2168 + ... + 2928.

It is an arithmetic number, because the mean of its divisors is an integer number (118237).

2^1939028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1939028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2128266).

1939028 is an abundant number, since it is smaller than the sum of its proper divisors (2317504).

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

1939028 is a wasteful number, since it uses less digits than its factorization.

1939028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1939028 is about 1392.4898563365. The cubic root of 1939028 is about 124.6985375476.

The spelling of 1939028 in words is "one million, nine hundred thirty-nine thousand, twenty-eight".