1028677842 has 24 divisors (see below), whose sum is σ = 2253848220. Its totient is φ = 339039360.

The previous prime is 1028677817. The next prime is 1028677883. The reversal of 1028677842 is 2487768201.

It can be written as a sum of positive squares in 2 ways, for example, as 1025984961 + 2692881 = 32031^2 + 1641^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319459 + ... + 322662.

Almost surely, 2^1028677842 is an apocalyptic number.

1028677842 is an abundant number, since it is smaller than the sum of its proper divisors (1225170378).

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

1028677842 is a wasteful number, since it uses less digits than its factorization.

1028677842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642218 (or 642215 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 1028677842 is about 32073.0079973800. The cubic root of 1028677842 is about 1009.4693294342.

The spelling of 1028677842 in words is "one billion, twenty-eight million, six hundred seventy-seven thousand, eight hundred forty-two".