918450 has 72 divisors (see below), whose sum is σ = 2674308. Its totient is φ = 224640.

The previous prime is 918443. The next prime is 918469. The reversal of 918450 is 54819.

It can be written as a sum of positive squares in 6 ways, for example, as 103041 + 815409 = 321^2 + 903^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5772 + ... + 5928.

2⁹¹⁸⁴⁵⁰ is an apocalyptic number.

918450 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 918450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1337154).

918450 is an abundant number, since it is smaller than the sum of its proper divisors (1755858).

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

918450 is a wasteful number, since it uses less digits than its factorization.

918450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 918450 is about 958.3579706978. The cubic root of 918450 is about 97.2042318942.

The spelling of 918450 in words is "nine hundred eighteen thousand, four hundred fifty".