7783728620 has 48 divisors (see below), whose sum is σ = 17040312576. Its totient is φ = 2983200000.

The previous prime is 7783728619. The next prime is 7783728637. The reversal of 7783728620 is 268273877.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470 + ... + 124770.

It is an arithmetic number, because the mean of its divisors is an integer number (355006512).

Almost surely, 2^7783728620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7783728620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8520156288).

7783728620 is an abundant number, since it is smaller than the sum of its proper divisors (9256583956).

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

7783728620 is a wasteful number, since it uses less digits than its factorization.

7783728620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124442 (or 124440 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 50.

The square root of 7783728620 is about 88225.4420221287. The cubic root of 7783728620 is about 1981.8124936532.

The spelling of 7783728620 in words is "seven billion, seven hundred eighty-three million, seven hundred twenty-eight thousand, six hundred twenty".