7720220140 has 24 divisors (see below), whose sum is σ = 16215610320. Its totient is φ = 3087488448.

The previous prime is 7720220113. The next prime is 7720220147. The reversal of 7720220140 is 410220277.

It is not an unprimeable number, because it can be changed into a prime (7720220147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76566 + ... + 145954.

It is an arithmetic number, because the mean of its divisors is an integer number (675650430).

Almost surely, 2^7720220140 is an apocalyptic number.

It is an amenable number.

7720220140 is an abundant number, since it is smaller than the sum of its proper divisors (8495390180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7720220140 is a wasteful number, since it uses less digits than its factorization.

7720220140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74961 (or 74959 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 7720220140 is about 87864.7832752121. The cubic root of 7720220140 is about 1976.4078102250.

The spelling of 7720220140 in words is "seven billion, seven hundred twenty million, two hundred twenty thousand, one hundred forty".