18246040 has 16 divisors (see below), whose sum is σ = 41053680. Its totient is φ = 7298400.

The previous prime is 18246037. The next prime is 18246079. The reversal of 18246040 is 4064281.

It is a junction number, because it is equal to n+sod(n) for n = 18245996 and 18246014.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 228036 + ... + 228115.

It is an arithmetic number, because the mean of its divisors is an integer number (2565855).

Almost surely, 2^18246040 is an apocalyptic number.

18246040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18246040 is an abundant number, since it is smaller than the sum of its proper divisors (22807640).

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

18246040 is a wasteful number, since it uses less digits than its factorization.

18246040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456162 (or 456158 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 18246040 is about 4271.5383645708. The cubic root of 18246040 is about 263.2628271779.

The spelling of 18246040 in words is "eighteen million, two hundred forty-six thousand, forty".