7040040 has 192 divisors, whose sum is σ = 26524800. Its totient is φ = 1462272.

The previous prime is 7040021. The next prime is 7040041. The reversal of 7040040 is 400407.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7040041) 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 47 ways as a sum of consecutive naturals, for example, 242746 + ... + 242774.

It is an arithmetic number, because the mean of its divisors is an integer number (138150).

Almost surely, 2^7040040 is an apocalyptic number.

7040040 is a gapful number since it is divisible by the number (70) 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 7040040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13262400).

7040040 is an abundant number, since it is smaller than the sum of its proper divisors (19484760).

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

7040040 is a wasteful number, since it uses less digits than its factorization.

7040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 7040040 is about 2653.3073700572. The cubic root of 7040040 is about 191.6571572682.

Adding to 7040040 its reverse (400407), we get a palindrome (7440447).

The spelling of 7040040 in words is "seven million, forty thousand, forty".