7322724021 has 8 divisors (see below), whose sum is σ = 9764064864. Its totient is φ = 4881599600.

The previous prime is 7322723999. The next prime is 7322724023. The reversal of 7322724021 is 1204272237.

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 7322724021 - 2⁷ = 7322723893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7322724021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7322724023) 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, 58075 + ... + 134231.

It is an arithmetic number, because the mean of its divisors is an integer number (1220508108).

Almost surely, 2^7322724021 is an apocalyptic number.

It is an amenable number.

7322724021 is a deficient number, since it is larger than the sum of its proper divisors (2441340843).

7322724021 is a wasteful number, since it uses less digits than its factorization.

7322724021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108211.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 7322724021 is about 85572.9163988233. The cubic root of 7322724021 is about 1941.8881978490. Note that the first 3 decimals are identical.

Adding to 7322724021 its reverse (1204272237), we get a palindrome (8526996258).

The spelling of 7322724021 in words is "seven billion, three hundred twenty-two million, seven hundred twenty-four thousand, twenty-one".