1118428 has 6 divisors (see below), whose sum is σ = 1957256. Its totient is φ = 559212.

The previous prime is 1118419. The next prime is 1118437. The reversal of 1118428 is 8248111.

It is an interprime number because it is at equal distance from previous prime (1118419) and next prime (1118437).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139800 + ... + 139807.

2^1118428 is an apocalyptic number.

It is an amenable number.

1118428 is a deficient number, since it is larger than the sum of its proper divisors (838828).

1118428 is a wasteful number, since it uses less digits than its factorization.

1118428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279611 (or 279609 counting only the distinct ones).

The product of its digits is 512, while the sum is 25.

The square root of 1118428 is about 1057.5575634451. The cubic root of 1118428 is about 103.8012723785.

The spelling of 1118428 in words is "one million, one hundred eighteen thousand, four hundred twenty-eight".