1839728 has 20 divisors (see below), whose sum is σ = 3888888. Its totient is φ = 836160.

The previous prime is 1839727. The next prime is 1839737. The reversal of 1839728 is 8279381.

It is a super-2 number, since 2×1839728² = 6769198227968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1839691 and 1839700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1839727) 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, 5051 + ... + 5402.

2^1839728 is an apocalyptic number.

It is an amenable number.

1839728 is an abundant number, since it is smaller than the sum of its proper divisors (2049160).

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

1839728 is a wasteful number, since it uses less digits than its factorization.

1839728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10472 (or 10466 counting only the distinct ones).

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

The square root of 1839728 is about 1356.3657323893. The cubic root of 1839728 is about 122.5324750774.

The spelling of 1839728 in words is "one million, eight hundred thirty-nine thousand, seven hundred twenty-eight".