2947051728 has 80 divisors (see below), whose sum is σ = 8956748160. Its totient is φ = 924562944.

The previous prime is 2947051727. The next prime is 2947051733. The reversal of 2947051728 is 8271507492.

It is a happy number.

2947051728 is a `hidden beast` number, since 2 + 9 + 470 + 5 + 172 + 8 = 666.

It is a super-2 number, since 2×2947051728² = 17370227775015571968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947051727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193300 + ... + 207987.

It is an arithmetic number, because the mean of its divisors is an integer number (111959352).

Almost surely, 2^2947051728 is an apocalyptic number.

It is an amenable number.

2947051728 is an abundant number, since it is smaller than the sum of its proper divisors (6009696432).

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

2947051728 is a wasteful number, since it uses less digits than its factorization.

2947051728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401321 (or 401309 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 2947051728 is about 54286.7546276253. The cubic root of 2947051728 is about 1433.7141987454.

The spelling of 2947051728 in words is "two billion, nine hundred forty-seven million, fifty-one thousand, seven hundred twenty-eight".