1122788 has 6 divisors (see below), whose sum is σ = 1964886. Its totient is φ = 561392.

The previous prime is 1122761. The next prime is 1122811. The reversal of 1122788 is 8872211.

It can be written as a sum of positive squares in only one way, i.e., 760384 + 362404 = 872^2 + 602^2 .

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1122788.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140345 + ... + 140352.

It is an arithmetic number, because the mean of its divisors is an integer number (327481).

2^1122788 is an apocalyptic number.

It is an amenable number.

1122788 is a deficient number, since it is larger than the sum of its proper divisors (842098).

1122788 is a wasteful number, since it uses less digits than its factorization.

1122788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280701 (or 280699 counting only the distinct ones).

The product of its digits is 1792, while the sum is 29.

The square root of 1122788 is about 1059.6169119073. The cubic root of 1122788 is about 103.9359813105.

Adding to 1122788 its reverse (8872211), we get a palindrome (9994999).

The spelling of 1122788 in words is "one million, one hundred twenty-two thousand, seven hundred eighty-eight".