1028025636 has 96 divisors (see below), whose sum is σ = 2705947776. Its totient is φ = 301235200.

The previous prime is 1028025629. The next prime is 1028025637. The reversal of 1028025636 is 6365208201.

1028025636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1028025597 and 1028025606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028025637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9097516 + ... + 9097628.

It is an arithmetic number, because the mean of its divisors is an integer number (28186956).

Almost surely, 2^1028025636 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 1028025636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352973888).

1028025636 is an abundant number, since it is smaller than the sum of its proper divisors (1677922140).

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

1028025636 is a wasteful number, since it uses less digits than its factorization.

1028025636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1028025636 is about 32062.8388637064. The cubic root of 1028025636 is about 1009.2559418801.

The spelling of 1028025636 in words is "one billion, twenty-eight million, twenty-five thousand, six hundred thirty-six".