2947420872 has 192 divisors, whose sum is σ = 9079761600. Its totient is φ = 888330240.

The previous prime is 2947420871. The next prime is 2947420873. The reversal of 2947420872 is 2780247492.

2947420872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2947420871) and next prime (2947420873).

It is not an unprimeable number, because it can be changed into a prime (2947420871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7206204 + ... + 7206612.

It is an arithmetic number, because the mean of its divisors is an integer number (47290425).

Almost surely, 2^2947420872 is an apocalyptic number.

2947420872 is a gapful number since it is divisible by the number (22) 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 2947420872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4539880800).

2947420872 is an abundant number, since it is smaller than the sum of its proper divisors (6132340728).

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

2947420872 is a wasteful number, since it uses less digits than its factorization.

2947420872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 2947420872 is about 54290.1544665329. The cubic root of 2947420872 is about 1433.7740579931.

The spelling of 2947420872 in words is "two billion, nine hundred forty-seven million, four hundred twenty thousand, eight hundred seventy-two".