2947812 has 48 divisors (see below), whose sum is σ = 8279040. Its totient is φ = 797472.

The previous prime is 2947801. The next prime is 2947823. The reversal of 2947812 is 2187492.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2947801) and next prime (2947823).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673 + ... + 2519.

It is an arithmetic number, because the mean of its divisors is an integer number (172480).

2^2947812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2947812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4139520).

2947812 is an abundant number, since it is smaller than the sum of its proper divisors (5331228).

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

2947812 is a wasteful number, since it uses less digits than its factorization.

2947812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880 (or 1878 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 2947812 is about 1716.9193341564. The cubic root of 2947812 is about 143.3837476645.

The spelling of 2947812 in words is "two million, nine hundred forty-seven thousand, eight hundred twelve".