18319248 has 30 divisors (see below), whose sum is σ = 51268854. Its totient is φ = 6106368.

The previous prime is 18319243. The next prime is 18319253. The reversal of 18319248 is 84291381.

It is an interprime number because it is at equal distance from previous prime (18319243) and next prime (18319253).

It can be written as a sum of positive squares in only one way, i.e., 12616704 + 5702544 = 3552^2 + 2388^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (18319241) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 63465 + ... + 63752.

Almost surely, 2^18319248 is an apocalyptic number.

18319248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18319248 is an abundant number, since it is smaller than the sum of its proper divisors (32949606).

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

18319248 is a wasteful number, since it uses less digits than its factorization.

18319248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127231 (or 127222 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 18319248 is about 4280.0990642741. The cubic root of 18319248 is about 263.6144509874.

The spelling of 18319248 in words is "eighteen million, three hundred nineteen thousand, two hundred forty-eight".