7678005930 has 128 divisors (see below), whose sum is σ = 23422901760. Its totient is φ = 1753228800.

The previous prime is 7678005913. The next prime is 7678005949. The reversal of 7678005930 is 395008767.

It is a happy number.

It is a super-2 number, since 2×7678005930² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3591822 + ... + 3593958.

It is an arithmetic number, because the mean of its divisors is an integer number (182991420).

Almost surely, 2^7678005930 is an apocalyptic number.

7678005930 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7678005930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11711450880).

7678005930 is an abundant number, since it is smaller than the sum of its proper divisors (15744895830).

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

7678005930 is a wasteful number, since it uses less digits than its factorization.

7678005930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061 (or 4055 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 7678005930 is about 87624.2314088974. The cubic root of 7678005930 is about 1972.7988877561.

The spelling of 7678005930 in words is "seven billion, six hundred seventy-eight million, five thousand, nine hundred thirty".