7720220324 has 24 divisors (see below), whose sum is σ = 13545066528. Its totient is φ = 3850217280.

The previous prime is 7720220317. The next prime is 7720220327. The reversal of 7720220324 is 4230220277.

It is a happy number.

It is a super-2 number, since 2×7720220324² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7720220327) 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, 3872672 + ... + 3874664.

It is an arithmetic number, because the mean of its divisors is an integer number (564377772).

Almost surely, 2^7720220324 is an apocalyptic number.

It is an amenable number.

7720220324 is a deficient number, since it is larger than the sum of its proper divisors (5824846204).

7720220324 is a wasteful number, since it uses less digits than its factorization.

7720220324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995 (or 3993 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 7720220324 is about 87864.7843222756. The cubic root of 7720220324 is about 1976.4078259266.

The spelling of 7720220324 in words is "seven billion, seven hundred twenty million, two hundred twenty thousand, three hundred twenty-four".