1238928 has 40 divisors (see below), whose sum is σ = 3267648. Its totient is φ = 404352.

The previous prime is 1238921. The next prime is 1238947. The reversal of 1238928 is 8298321.

It is not an unprimeable number, because it can be changed into a prime (1238921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2301 + ... + 2787.

2^1238928 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 1238928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1633824).

1238928 is an abundant number, since it is smaller than the sum of its proper divisors (2028720).

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

1238928 is a wasteful number, since it uses less digits than its factorization.

1238928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 545 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 1238928 is about 1113.0714262796. The cubic root of 1238928 is about 107.4027387821.

The spelling of 1238928 in words is "one million, two hundred thirty-eight thousand, nine hundred twenty-eight".