2262720721 has 8 divisors (see below), whose sum is σ = 2341822464. Its totient is φ = 2184000960.

The previous prime is 2262720709. The next prime is 2262720731. The reversal of 2262720721 is 1270272622.

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

It is a cyclic number.

It is not a de Polignac number, because 2262720721 - 2¹⁵ = 2262687953 is a prime.

It is a super-2 number, since 2×2262720721² = 10239810122485519682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2262720731) 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, 83416 + ... + 107161.

It is an arithmetic number, because the mean of its divisors is an integer number (292727808).

Almost surely, 2^2262720721 is an apocalyptic number.

It is an amenable number.

2262720721 is a deficient number, since it is larger than the sum of its proper divisors (79101743).

2262720721 is a wasteful number, since it uses less digits than its factorization.

2262720721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190991.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 2262720721 is about 47568.0640871583. The cubic root of 2262720721 is about 1312.8355185888.

The spelling of 2262720721 in words is "two billion, two hundred sixty-two million, seven hundred twenty thousand, seven hundred twenty-one".