7240220805 has 16 divisors (see below), whose sum is σ = 11692620864. Its totient is φ = 3825361920.

The previous prime is 7240220719. The next prime is 7240220809. The reversal of 7240220805 is 5080220427.

It is not a de Polignac number, because 7240220805 - 2⁸ = 7240220549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7240220809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2253916 + ... + 2257125.

It is an arithmetic number, because the mean of its divisors is an integer number (730788804).

Almost surely, 2^7240220805 is an apocalyptic number.

It is an amenable number.

7240220805 is a deficient number, since it is larger than the sum of its proper divisors (4452400059).

7240220805 is a wasteful number, since it uses less digits than its factorization.

7240220805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511156.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 7240220805 is about 85089.4870415846. The cubic root of 7240220805 is about 1934.5677205409.

The spelling of 7240220805 in words is "seven billion, two hundred forty million, two hundred twenty thousand, eight hundred five".