7720938120 has 128 divisors (see below), whose sum is σ = 27325808640. Its totient is φ = 1707851520.

The previous prime is 7720938101. The next prime is 7720938209. The reversal of 7720938120 is 218390277.

It is a super-2 number, since 2×7720938120² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122212 + ... + 174291.

It is an arithmetic number, because the mean of its divisors is an integer number (213482880).

Almost surely, 2^7720938120 is an apocalyptic number.

7720938120 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7720938120 is an abundant number, since it is smaller than the sum of its proper divisors (19604870520).

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

7720938120 is a wasteful number, since it uses less digits than its factorization.

7720938120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296555 (or 296551 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 7720938120 is about 87868.8688899544. The cubic root of 7720938120 is about 1976.4690769275.

The spelling of 7720938120 in words is "seven billion, seven hundred twenty million, nine hundred thirty-eight thousand, one hundred twenty".