18295140 has 48 divisors (see below), whose sum is σ = 51750720. Its totient is φ = 4828800.

The previous prime is 18295127. The next prime is 18295141. The reversal of 18295140 is 4159281.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 18295098 and 18295107.

It is not an unprimeable number, because it can be changed into a prime (18295141) 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 15 ways as a sum of consecutive naturals, for example, 4551 + ... + 7569.

It is an arithmetic number, because the mean of its divisors is an integer number (1078140).

Almost surely, 2^18295140 is an apocalyptic number.

18295140 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 18295140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25875360).

18295140 is an abundant number, since it is smaller than the sum of its proper divisors (33455580).

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

18295140 is a wasteful number, since it uses less digits than its factorization.

18295140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132 (or 3130 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 18295140 is about 4277.2818471548. The cubic root of 18295140 is about 263.4987619768.

The spelling of 18295140 in words is "eighteen million, two hundred ninety-five thousand, one hundred forty".