1028811740 has 24 divisors (see below), whose sum is σ = 2356914672. Its totient is φ = 374113280.

The previous prime is 1028811713. The next prime is 1028811757. The reversal of 1028811740 is 471188201.

It is a junction number, because it is equal to n+sod(n) for n = 1028811697 and 1028811706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2337989 + ... + 2338428.

It is an arithmetic number, because the mean of its divisors is an integer number (98204778).

Almost surely, 2^1028811740 is an apocalyptic number.

1028811740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028811740 is an abundant number, since it is smaller than the sum of its proper divisors (1328102932).

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

1028811740 is a wasteful number, since it uses less digits than its factorization.

1028811740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676437 (or 4676435 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 1028811740 is about 32075.0953233190. The cubic root of 1028811740 is about 1009.5131267743.

Adding to 1028811740 its reverse (471188201), we get a palindrome (1499999941).

The spelling of 1028811740 in words is "one billion, twenty-eight million, eight hundred eleven thousand, seven hundred forty".