18263480 has 16 divisors (see below), whose sum is σ = 41092920. Its totient is φ = 7305376.

The previous prime is 18263471. The next prime is 18263521. The reversal of 18263480 is 8436281.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228254 + ... + 228333.

Almost surely, 2^18263480 is an apocalyptic number.

18263480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18263480 is an abundant number, since it is smaller than the sum of its proper divisors (22829440).

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

18263480 is a wasteful number, since it uses less digits than its factorization.

18263480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456598 (or 456594 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 18263480 is about 4273.5792960936. The cubic root of 18263480 is about 263.3466780967.

The spelling of 18263480 in words is "eighteen million, two hundred sixty-three thousand, four hundred eighty".