18454020 has 96 divisors (see below), whose sum is σ = 56730240. Its totient is φ = 4454400.

The previous prime is 18454003. The next prime is 18454031. The reversal of 18454020 is 2045481.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45820 + ... + 46220.

It is an arithmetic number, because the mean of its divisors is an integer number (590940).

Almost surely, 2^18454020 is an apocalyptic number.

18454020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18454020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28365120).

18454020 is an abundant number, since it is smaller than the sum of its proper divisors (38276220).

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

18454020 is a wasteful number, since it uses less digits than its factorization.

18454020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 18454020 is about 4295.8142417940. The cubic root of 18454020 is about 264.2593296558.

The spelling of 18454020 in words is "eighteen million, four hundred fifty-four thousand, twenty".