2943828 has 18 divisors (see below), whose sum is σ = 7441434. Its totient is φ = 981264.

The previous prime is 2943827. The next prime is 2943833. The reversal of 2943828 is 8283492.

It can be written as a sum of positive squares in only one way, i.e., 2782224 + 161604 = 1668^2 + 402^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×2943828² = 17332246587168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 81773 = 2943828 / (2 + 9 + 4 + 3 + 8 + 2 + 8).

It is a d-powerful number, because it can be written as 2⁷ + 9⁶ + 4⁹ + 3⁹ + 8³ + 2²¹ + 8⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 2943792 and 2943801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2943821) 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, 40851 + ... + 40922.

It is an arithmetic number, because the mean of its divisors is an integer number (413413).

2^2943828 is an apocalyptic number.

It is an amenable number.

2943828 is an abundant number, since it is smaller than the sum of its proper divisors (4497606).

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

2943828 is a wasteful number, since it uses less digits than its factorization.

2943828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81783 (or 81778 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 2943828 is about 1715.7587242966. The cubic root of 2943828 is about 143.3191236439.

The spelling of 2943828 in words is "two million, nine hundred forty-three thousand, eight hundred twenty-eight".