1028776122 has 36 divisors (see below), whose sum is σ = 2450079450. Its totient is φ = 311749680.

The previous prime is 1028776087. The next prime is 1028776123. The reversal of 1028776122 is 2216778201.

1028776122 is a `hidden beast` number, since 10 + 28 + 7 + 7 + 612 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 640646721 + 388129401 = 25311^2 + 19701^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1028776123) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 233997 + ... + 238352.

Almost surely, 2^1028776122 is an apocalyptic number.

1028776122 is an abundant number, since it is smaller than the sum of its proper divisors (1421303328).

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

1028776122 is a wasteful number, since it uses less digits than its factorization.

1028776122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472379 (or 472365 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1028776122 is about 32074.5400902336. The cubic root of 1028776122 is about 1009.5014766826.

The spelling of 1028776122 in words is "one billion, twenty-eight million, seven hundred seventy-six thousand, one hundred twenty-two".