7240013 has 8 divisors (see below), whose sum is σ = 7944480. Its totient is φ = 6543280.

The previous prime is 7240001. The next prime is 7240031. The reversal of 7240013 is 3100427.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7240013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7239973 and 7240000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7240033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131 + ... + 3807.

It is an arithmetic number, because the mean of its divisors is an integer number (993060).

Almost surely, 2^7240013 is an apocalyptic number.

It is an amenable number.

7240013 is a deficient number, since it is larger than the sum of its proper divisors (704467).

7240013 is a wasteful number, since it uses less digits than its factorization.

7240013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 7240013 is about 2690.7272251196. The cubic root of 7240013 is about 193.4549212050.

The spelling of 7240013 in words is "seven million, two hundred forty thousand, thirteen".