7240739 has 8 divisors (see below), whose sum is σ = 7922880. Its totient is φ = 6562600.

The previous prime is 7240733. The next prime is 7240741. The reversal of 7240739 is 9370427.

It is a happy number.

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

It is not a de Polignac number, because 7240739 - 2¹² = 7236643 is a prime.

It is a super-2 number, since 2×7240739² = 104856602532242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7240733) 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, 3824 + ... + 5394.

It is an arithmetic number, because the mean of its divisors is an integer number (990360).

Almost surely, 2^7240739 is an apocalyptic number.

7240739 is a deficient number, since it is larger than the sum of its proper divisors (682141).

7240739 is a wasteful number, since it uses less digits than its factorization.

7240739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 7240739 is about 2690.8621295042. The cubic root of 7240739 is about 193.4613872881.

The spelling of 7240739 in words is "seven million, two hundred forty thousand, seven hundred thirty-nine".