2947930380 has 144 divisors (see below), whose sum is σ = 9072501984. Its totient is φ = 774743040.

The previous prime is 2947930379. The next prime is 2947930421. The reversal of 2947930380 is 830397492.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4265835 + ... + 4266525.

It is an arithmetic number, because the mean of its divisors is an integer number (63003486).

Almost surely, 2^2947930380 is an apocalyptic number.

2947930380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2947930380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4536250992).

2947930380 is an abundant number, since it is smaller than the sum of its proper divisors (6124571604).

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

2947930380 is a wasteful number, since it uses less digits than its factorization.

2947930380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 2947930380 is about 54294.8467167926. The cubic root of 2947930380 is about 1433.8566700229.

The spelling of 2947930380 in words is "two billion, nine hundred forty-seven million, nine hundred thirty thousand, three hundred eighty".