18246020 has 24 divisors (see below), whose sum is σ = 41264664. Its totient is φ = 6736896.

The previous prime is 18245999. The next prime is 18246029. The reversal of 18246020 is 2064281.

It can be written as a sum of positive squares in 4 ways, for example, as 538756 + 17707264 = 734^2 + 4208^2 .

It is not an unprimeable number, because it can be changed into a prime (18246029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34829 + ... + 35348.

It is an arithmetic number, because the mean of its divisors is an integer number (1719361).

Almost surely, 2^18246020 is an apocalyptic number.

18246020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18246020 is an abundant number, since it is smaller than the sum of its proper divisors (23018644).

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

18246020 is a wasteful number, since it uses less digits than its factorization.

18246020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70199 (or 70197 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 18246020 is about 4271.5360234932. The cubic root of 18246020 is about 263.2627309879.

The spelling of 18246020 in words is "eighteen million, two hundred forty-six thousand, twenty".