2943136 has 36 divisors (see below), whose sum is σ = 6743898. Its totient is φ = 1260672.

The previous prime is 2943133. The next prime is 2943137. The reversal of 2943136 is 6313492.

It can be written as a sum of positive squares in only one way, i.e., 2371600 + 571536 = 1540^2 + 756^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2943133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 630 + ... + 2506.

2^2943136 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 2943136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3371949).

2943136 is an abundant number, since it is smaller than the sum of its proper divisors (3800762).

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

2943136 is a wasteful number, since it uses less digits than its factorization.

2943136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1886 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 2943136 is about 1715.5570523885. The cubic root of 2943136 is about 143.3078928467.

The spelling of 2943136 in words is "two million, nine hundred forty-three thousand, one hundred thirty-six".