1028865654 has 24 divisors (see below), whose sum is σ = 2306079360. Its totient is φ = 331129008.

The previous prime is 1028865641. The next prime is 1028865679. The reversal of 1028865654 is 4565688201.

1028865654 is a `hidden beast` number, since 1 + 0 + 2 + 8 + 86 + 565 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 984982 + ... + 986025.

It is an arithmetic number, because the mean of its divisors is an integer number (96086640).

Almost surely, 2^1028865654 is an apocalyptic number.

1028865654 is an abundant number, since it is smaller than the sum of its proper divisors (1277213706).

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

1028865654 is a wasteful number, since it uses less digits than its factorization.

1028865654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971044 (or 1971041 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 1028865654 is about 32075.9357462881. The cubic root of 1028865654 is about 1009.5307606905.

The spelling of 1028865654 in words is "one billion, twenty-eight million, eight hundred sixty-five thousand, six hundred fifty-four".