1128402 has 48 divisors (see below), whose sum is σ = 2751840. Its totient is φ = 331200.

The previous prime is 1128397. The next prime is 1128427. The reversal of 1128402 is 2048211.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 8049 + ... + 8187.

It is an arithmetic number, because the mean of its divisors is an integer number (57330).

2^1128402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375920).

1128402 is an abundant number, since it is smaller than the sum of its proper divisors (1623438).

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

1128402 is a wasteful number, since it uses less digits than its factorization.

1128402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1128402 is about 1062.2626793783. The cubic root of 1128402 is about 104.1089218795.

The spelling of 1128402 in words is "one million, one hundred twenty-eight thousand, four hundred two".