18797448 has 16 divisors (see below), whose sum is σ = 46993680. Its totient is φ = 6265808.

The previous prime is 18797447. The next prime is 18797483. The reversal of 18797448 is 84479781.

It is a junction number, because it is equal to n+sod(n) for n = 18797397 and 18797406.

It is not an unprimeable number, because it can be changed into a prime (18797447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391590 + ... + 391637.

It is an arithmetic number, because the mean of its divisors is an integer number (2937105).

Almost surely, 2^18797448 is an apocalyptic number.

It is an amenable number.

18797448 is an abundant number, since it is smaller than the sum of its proper divisors (28196232).

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

18797448 is a wasteful number, since it uses less digits than its factorization.

18797448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783236 (or 783232 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 18797448 is about 4335.6023802927. The cubic root of 18797448 is about 265.8885469727. Note that the first 3 decimals are identical.

The spelling of 18797448 in words is "eighteen million, seven hundred ninety-seven thousand, four hundred forty-eight".