7296840 has 48 divisors (see below), whose sum is σ = 23715900. Its totient is φ = 1945728.

The previous prime is 7296827. The next prime is 7296841. The reversal of 7296840 is 486927.

It can be written as a sum of positive squares in 2 ways, for example, as 7257636 + 39204 = 2694^2 + 198^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7296795 and 7296804.

It is not an unprimeable number, because it can be changed into a prime (7296841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9775 + ... + 10494.

Almost surely, 2^7296840 is an apocalyptic number.

It is an amenable number.

7296840 is an abundant number, since it is smaller than the sum of its proper divisors (16419060).

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

7296840 is a wasteful number, since it uses less digits than its factorization.

7296840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20286 (or 20279 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 7296840 is about 2701.2663696866. The cubic root of 7296840 is about 193.9597464929.

It can be divided in two parts, 729 and 6840, that added together give a square (7569 = 87²).

The spelling of 7296840 in words is "seven million, two hundred ninety-six thousand, eight hundred forty".