18442450 has 48 divisors (see below), whose sum is σ = 39138120. Its totient is φ = 6405120.

The previous prime is 18442441. The next prime is 18442453. The reversal of 18442450 is 5424481.

It can be written as a sum of positive squares in 12 ways, for example, as 877969 + 17564481 = 937^2 + 4191^2 .

It is not an unprimeable number, because it can be changed into a prime (18442453) by changing a digit.

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, 10216 + ... + 11884.

Almost surely, 2^18442450 is an apocalyptic number.

18442450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18442450 is an abundant number, since it is smaller than the sum of its proper divisors (20695670).

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

18442450 is a wasteful number, since it uses less digits than its factorization.

18442450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711 (or 1706 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 18442450 is about 4294.4673709320. The cubic root of 18442450 is about 264.2040911108.

The spelling of 18442450 in words is "eighteen million, four hundred forty-two thousand, four hundred fifty".