1028138 has 8 divisors (see below), whose sum is σ = 1547040. Its totient is φ = 512460.

The previous prime is 1028129. The next prime is 1028141. The reversal of 1028138 is 8318201.

1028138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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, 293 + ... + 1463.

It is an arithmetic number, because the mean of its divisors is an integer number (193380).

2^1028138 is an apocalyptic number.

1028138 is a deficient number, since it is larger than the sum of its proper divisors (518902).

1028138 is a wasteful number, since it uses less digits than its factorization.

1028138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1028138 is about 1013.9713999911. The cubic root of 1028138 is about 100.9292711360.

The spelling of 1028138 in words is "one million, twenty-eight thousand, one hundred thirty-eight".