1292801028 has 24 divisors (see below), whose sum is σ = 3052881888. Its totient is φ = 425741376.

The previous prime is 1292800991. The next prime is 1292801039. The reversal of 1292801028 is 8201082921.

It is a self number, because there is not a number n which added to its sum of digits gives 1292801028.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648001 + ... + 649992.

It is an arithmetic number, because the mean of its divisors is an integer number (127203412).

Almost surely, 2^1292801028 is an apocalyptic number.

It is an amenable number.

1292801028 is an abundant number, since it is smaller than the sum of its proper divisors (1760080860).

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

1292801028 is a wasteful number, since it uses less digits than its factorization.

1292801028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298083 (or 1298081 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 1292801028 is about 35955.5423822253. The cubic root of 1292801028 is about 1089.3745613746.

Adding to 1292801028 its reverse (8201082921), we get a palindrome (9493883949).

The spelling of 1292801028 in words is "one billion, two hundred ninety-two million, eight hundred one thousand, twenty-eight".