7220240726 has 4 divisors (see below), whose sum is σ = 10830361092. Its totient is φ = 3610120362.

The previous prime is 7220240689. The next prime is 7220240743. The reversal of 7220240726 is 6270420227.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×7220240726² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7220240692 and 7220240701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805060180 + ... + 1805060183.

It is an arithmetic number, because the mean of its divisors is an integer number (2707590273).

Almost surely, 2^7220240726 is an apocalyptic number.

7220240726 is a deficient number, since it is larger than the sum of its proper divisors (3610120366).

7220240726 is a wasteful number, since it uses less digits than its factorization.

7220240726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610120365.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 7220240726 is about 84971.9996587111. Note that the first 3 decimals coincide. The cubic root of 7220240726 is about 1932.7865397861.

The spelling of 7220240726 in words is "seven billion, two hundred twenty million, two hundred forty thousand, seven hundred twenty-six".