1121928 has 16 divisors (see below), whose sum is σ = 2804880. Its totient is φ = 373968.

The previous prime is 1121899. The next prime is 1121933. The reversal of 1121928 is 8291211.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 46747 = 1121928 / (1 + 1 + 2 + 1 + 9 + 2 + 8).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1121898 and 1121907.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23350 + ... + 23397.

It is an arithmetic number, because the mean of its divisors is an integer number (175305).

2^1121928 is an apocalyptic number.

It is an amenable number.

1121928 is an abundant number, since it is smaller than the sum of its proper divisors (1682952).

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

1121928 is a wasteful number, since it uses less digits than its factorization.

1121928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46756 (or 46752 counting only the distinct ones).

The product of its digits is 288, while the sum is 24.

The square root of 1121928 is about 1059.2110271329. The cubic root of 1121928 is about 103.9094379277.

The spelling of 1121928 in words is "one million, one hundred twenty-one thousand, nine hundred twenty-eight".