1028590542 has 128 divisors (see below), whose sum is σ = 2813875200. Its totient is φ = 271807488.

The previous prime is 1028590529. The next prime is 1028590543. The reversal of 1028590542 is 2450958201.

1028590542 is a `hidden beast` number, since 1 + 0 + 28 + 5 + 90 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1028590497 and 1028590506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028590543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 377778 + ... + 380490.

It is an arithmetic number, because the mean of its divisors is an integer number (21983400).

Almost surely, 2^1028590542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1028590542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1406937600).

1028590542 is an abundant number, since it is smaller than the sum of its proper divisors (1785284658).

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

1028590542 is a wasteful number, since it uses less digits than its factorization.

1028590542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807 (or 2801 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1028590542 is about 32071.6470110283. The cubic root of 1028590542 is about 1009.4407720109.

The spelling of 1028590542 in words is "one billion, twenty-eight million, five hundred ninety thousand, five hundred forty-two".