1118478 has 16 divisors (see below), whose sum is σ = 2255616. Its totient is φ = 369720.

The previous prime is 1118441. The next prime is 1118479. The reversal of 1118478 is 8748111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75 + ... + 1497.

It is an arithmetic number, because the mean of its divisors is an integer number (140976).

2^1118478 is an apocalyptic number.

1118478 is an abundant number, since it is smaller than the sum of its proper divisors (1137138).

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

1118478 is a wasteful number, since it uses less digits than its factorization.

1118478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559.

The product of its digits is 1792, while the sum is 30.

The square root of 1118478 is about 1057.5812025561. The cubic root of 1118478 is about 103.8028191883.

It can be divided in two parts, 1118 and 478, that added together give a triangular number (1596 = T₅₆).

The spelling of 1118478 in words is "one million, one hundred eighteen thousand, four hundred seventy-eight".