18440352 has 96 divisors (see below), whose sum is σ = 61488000. Its totient is φ = 5266944.

The previous prime is 18440351. The next prime is 18440363. The reversal of 18440352 is 25304481.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18440351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4524 + ... + 7572.

It is an arithmetic number, because the mean of its divisors is an integer number (640500).

Almost surely, 2^18440352 is an apocalyptic number.

18440352 is a gapful number since it is divisible by the number (12) 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 18440352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30744000).

18440352 is an abundant number, since it is smaller than the sum of its proper divisors (43047648).

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

18440352 is a wasteful number, since it uses less digits than its factorization.

18440352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075 (or 3061 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 18440352 is about 4294.2230962073. The cubic root of 18440352 is about 264.1940721744.

The spelling of 18440352 in words is "eighteen million, four hundred forty thousand, three hundred fifty-two".