7287943 has 8 divisors (see below), whose sum is σ = 7938000. Its totient is φ = 6650688.

The previous prime is 7287919. The next prime is 7287947. The reversal of 7287943 is 3497827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7287943 - 2⁵ = 7287911 is a prime.

It is a super-2 number, since 2×7287943² = 106228226342498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7287896 and 7287905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7287947) 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 7 ways as a sum of consecutive naturals, for example, 1993 + ... + 4306.

It is an arithmetic number, because the mean of its divisors is an integer number (992250).

Almost surely, 2^7287943 is an apocalyptic number.

7287943 is a deficient number, since it is larger than the sum of its proper divisors (650057).

7287943 is a wasteful number, since it uses less digits than its factorization.

7287943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401.

The product of its digits is 84672, while the sum is 40.

The square root of 7287943 is about 2699.6190471991. The cubic root of 7287943 is about 193.8808830533.

The spelling of 7287943 in words is "seven million, two hundred eighty-seven thousand, nine hundred forty-three".