7730230640 has 80 divisors (see below), whose sum is σ = 19620217440. Its totient is φ = 2809052160.

The previous prime is 7730230639. The next prime is 7730230663. The reversal of 7730230640 is 460320377.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 7730230597 and 7730230606.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2100482 + ... + 2104158.

It is an arithmetic number, because the mean of its divisors is an integer number (245252718).

Almost surely, 2^7730230640 is an apocalyptic number.

It is an amenable number.

7730230640 is an abundant number, since it is smaller than the sum of its proper divisors (11889986800).

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

7730230640 is a wasteful number, since it uses less digits than its factorization.

7730230640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6090 (or 6084 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 7730230640 is about 87921.7301922568. The cubic root of 7730230640 is about 1977.2616841984.

The spelling of 7730230640 in words is "seven billion, seven hundred thirty million, two hundred thirty thousand, six hundred forty".