1028578662 has 96 divisors (see below), whose sum is σ = 2397403008. Its totient is φ = 330293376.

The previous prime is 1028578643. The next prime is 1028578669. The reversal of 1028578662 is 2668758201.

1028578662 is a `hidden beast` number, since 10 + 2 + 8 + 578 + 6 + 62 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028578669) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1734238 + ... + 1734830.

It is an arithmetic number, because the mean of its divisors is an integer number (24972948).

Almost surely, 2^1028578662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1028578662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1198701504).

1028578662 is an abundant number, since it is smaller than the sum of its proper divisors (1368824346).

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

1028578662 is an equidigital number, since it uses as much as digits as its factorization.

1028578662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 1028578662 is about 32071.4618001737. The cubic root of 1028578662 is about 1009.4368857212.

The spelling of 1028578662 in words is "one billion, twenty-eight million, five hundred seventy-eight thousand, six hundred sixty-two".