18175040 has 112 divisors (see below), whose sum is σ = 49542192. Its totient is φ = 6291456.

The previous prime is 18175019. The next prime is 18175049. The reversal of 18175040 is 4057181.

It can be written as a sum of positive squares in 8 ways, for example, as 802816 + 17372224 = 896^2 + 4168^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18175049) 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, 70592 + ... + 70848.

It is an arithmetic number, because the mean of its divisors is an integer number (442341).

Almost surely, 2^18175040 is an apocalyptic number.

18175040 is a gapful number since it is divisible by the number (10) 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 18175040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24771096).

18175040 is an abundant number, since it is smaller than the sum of its proper divisors (31367152).

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

18175040 is a wasteful number, since it uses less digits than its factorization.

18175040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 18175040 is about 4263.2194407513. The cubic root of 18175040 is about 262.9209090055.

The spelling of 18175040 in words is "eighteen million, one hundred seventy-five thousand, forty".