7290805 has 8 divisors (see below), whose sum is σ = 8816544. Its totient is φ = 5787600.

The previous prime is 7290799. The next prime is 7290809. The reversal of 7290805 is 5080927.

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

It is a de Polignac number, because none of the positive numbers 2^k-7290805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7290809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4911 + ... + 6220.

It is an arithmetic number, because the mean of its divisors is an integer number (1102068).

Almost surely, 2^7290805 is an apocalyptic number.

It is an amenable number.

7290805 is a deficient number, since it is larger than the sum of its proper divisors (1525739).

7290805 is a wasteful number, since it uses less digits than its factorization.

7290805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11267.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 7290805 is about 2700.1490699589. The cubic root of 7290805 is about 193.9062589592.

The spelling of 7290805 in words is "seven million, two hundred ninety thousand, eight hundred five".