18442496 has 36 divisors (see below), whose sum is σ = 37448124. Its totient is φ = 9062400.

The previous prime is 18442493. The next prime is 18442507. The reversal of 18442496 is 69424481.

It can be written as a sum of positive squares in 2 ways, for example, as 8202496 + 10240000 = 2864^2 + 3200^2 .

It is a super-6 number, since 6×18442496⁶ (a number of 45 digits) contains 666666 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18442493) 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, 15026 + ... + 16206.

Almost surely, 2^18442496 is an apocalyptic number.

18442496 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 18442496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18724062).

18442496 is an abundant number, since it is smaller than the sum of its proper divisors (19005628).

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

18442496 is an equidigital number, since it uses as much as digits as its factorization.

18442496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258 (or 1244 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 18442496 is about 4294.4727266569. The cubic root of 18442496 is about 264.2043107739.

The spelling of 18442496 in words is "eighteen million, four hundred forty-two thousand, four hundred ninety-six".