18703480 has 16 divisors (see below), whose sum is σ = 42082920. Its totient is φ = 7481376.

The previous prime is 18703441. The next prime is 18703501. The reversal of 18703480 is 8430781.

It is a happy number.

It is a super-2 number, since 2×18703480² = 699640328220800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233754 + ... + 233833.

Almost surely, 2^18703480 is an apocalyptic number.

18703480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18703480 is an abundant number, since it is smaller than the sum of its proper divisors (23379440).

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

18703480 is a wasteful number, since it uses less digits than its factorization.

18703480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467598 (or 467594 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 18703480 is about 4324.7520160120. The cubic root of 18703480 is about 265.4447497764. Note that the first 3 decimals are identical.

The spelling of 18703480 in words is "eighteen million, seven hundred three thousand, four hundred eighty".