7040430 has 48 divisors (see below), whose sum is σ = 18471024. Its totient is φ = 1860480.

The previous prime is 7040413. The next prime is 7040443. The reversal of 7040430 is 340407.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12045 + ... + 12615.

It is an arithmetic number, because the mean of its divisors is an integer number (384813).

Almost surely, 2^7040430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7040430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9235512).

7040430 is an abundant number, since it is smaller than the sum of its proper divisors (11430594).

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

7040430 is a wasteful number, since it uses less digits than its factorization.

7040430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 7040430 is about 2653.3808622209. The cubic root of 7040430 is about 191.6606963064.

Adding to 7040430 its reverse (340407), we get a palindrome (7380837).

The spelling of 7040430 in words is "seven million, forty thousand, four hundred thirty".