18074020 has 12 divisors (see below), whose sum is σ = 37955484. Its totient is φ = 7229600.

The previous prime is 18073981. The next prime is 18074027. The reversal of 18074020 is 2047081.

It can be written as a sum of positive squares in 2 ways, for example, as 10719076 + 7354944 = 3274^2 + 2712^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18073982 and 18074000.

It is not an unprimeable number, because it can be changed into a prime (18074027) 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 3 ways as a sum of consecutive naturals, for example, 451831 + ... + 451870.

It is an arithmetic number, because the mean of its divisors is an integer number (3162957).

Almost surely, 2^18074020 is an apocalyptic number.

18074020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18074020 is an abundant number, since it is smaller than the sum of its proper divisors (19881464).

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

18074020 is a wasteful number, since it uses less digits than its factorization.

18074020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903710 (or 903708 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 18074020 is about 4251.3550780898. The cubic root of 18074020 is about 262.4328838238.

The spelling of 18074020 in words is "eighteen million, seventy-four thousand, twenty".