18234480 has 80 divisors (see below), whose sum is σ = 61674624. Its totient is φ = 4419840.

The previous prime is 18234473. The next prime is 18234493. The reversal of 18234480 is 8443281.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 814 + ... + 6093.

Almost surely, 2^18234480 is an apocalyptic number.

18234480 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 18234480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30837312).

18234480 is an abundant number, since it is smaller than the sum of its proper divisors (43440144).

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

18234480 is a wasteful number, since it uses less digits than its factorization.

18234480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6934 (or 6928 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 18234480 is about 4270.1850077017. The cubic root of 18234480 is about 263.2072176462.

The spelling of 18234480 in words is "eighteen million, two hundred thirty-four thousand, four hundred eighty".