18480534 has 16 divisors (see below), whose sum is σ = 37468272. Its totient is φ = 6075648.

The previous prime is 18480503. The next prime is 18480571. The reversal of 18480534 is 43508481.

It is a junction number, because it is equal to n+sod(n) for n = 18480495 and 18480504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20659 + ... + 21534.

It is an arithmetic number, because the mean of its divisors is an integer number (2341767).

Almost surely, 2^18480534 is an apocalyptic number.

18480534 is an abundant number, since it is smaller than the sum of its proper divisors (18987738).

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

18480534 is a wasteful number, since it uses less digits than its factorization.

18480534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42271.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 18480534 is about 4298.8991614133. The cubic root of 18480534 is about 264.3858281813.

The spelling of 18480534 in words is "eighteen million, four hundred eighty thousand, five hundred thirty-four".