1121628 has 24 divisors (see below), whose sum is σ = 2638720. Its totient is φ = 370800.

The previous prime is 1121621. The next prime is 1121629. The reversal of 1121628 is 8261211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1503 + ... + 2121.

2^1121628 is an apocalyptic number.

It is an amenable number.

1121628 is an abundant number, since it is smaller than the sum of its proper divisors (1517092).

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

1121628 is a wasteful number, since it uses less digits than its factorization.

1121628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 775 counting only the distinct ones).

The product of its digits is 192, while the sum is 21.

The square root of 1121628 is about 1059.0694028250. The cubic root of 1121628 is about 103.9001754170.

Adding to 1121628 its reverse (8261211), we get a palindrome (9382839).

The spelling of 1121628 in words is "one million, one hundred twenty-one thousand, six hundred twenty-eight".