2947887 has 32 divisors (see below), whose sum is σ = 4700160. Its totient is φ = 1821600.

The previous prime is 2947877. The next prime is 2947891. The reversal of 2947887 is 7887492.

It is not a de Polignac number, because 2947887 - 2⁶ = 2947823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29137 + ... + 29237.

It is an arithmetic number, because the mean of its divisors is an integer number (146880).

2^2947887 is an apocalyptic number.

2947887 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2947887 is a deficient number, since it is larger than the sum of its proper divisors (1752273).

2947887 is a wasteful number, since it uses less digits than its factorization.

2947887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 174 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 2947887 is about 1716.9411754629. The cubic root of 2947887 is about 143.3849636726.

The spelling of 2947887 in words is "two million, nine hundred forty-seven thousand, eight hundred eighty-seven".