18440496 has 60 divisors (see below), whose sum is σ = 52293280. Its totient is φ = 6065280.

The previous prime is 18440489. The next prime is 18440501. The reversal of 18440496 is 69404481.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18440496.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10566 + ... + 12186.

Almost surely, 2^18440496 is an apocalyptic number.

18440496 is a gapful number since it is divisible by the number (16) 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 18440496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26146640).

18440496 is an abundant number, since it is smaller than the sum of its proper divisors (33852784).

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

18440496 is a wasteful number, since it uses less digits than its factorization.

18440496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1705 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 18440496 is about 4294.2398628861. The cubic root of 18440496 is about 264.1947598664.

The spelling of 18440496 in words is "eighteen million, four hundred forty thousand, four hundred ninety-six".