7180040 has 32 divisors (see below), whose sum is σ = 18463680. Its totient is φ = 2461632.

The previous prime is 7180039. The next prime is 7180051. The reversal of 7180040 is 400817.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 7179994 and 7180021.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12542 + ... + 13101.

It is an arithmetic number, because the mean of its divisors is an integer number (576990).

Almost surely, 2^7180040 is an apocalyptic number.

7180040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7180040 is an abundant number, since it is smaller than the sum of its proper divisors (11283640).

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

7180040 is a wasteful number, since it uses less digits than its factorization.

7180040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25661 (or 25657 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 7180040 is about 2679.5596653182. The cubic root of 7180040 is about 192.9192750361.

Adding to 7180040 its reverse (400817), we get a palindrome (7580857).

The spelling of 7180040 in words is "seven million, one hundred eighty thousand, forty".