2129284 has 24 divisors (see below), whose sum is σ = 3990168. Its totient is φ = 990720.

The previous prime is 2129279. The next prime is 2129291. The reversal of 2129284 is 4829212.

It can be written as a sum of positive squares in 4 ways, for example, as 386884 + 1742400 = 622^2 + 1320^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11674 + ... + 11854.

It is an arithmetic number, because the mean of its divisors is an integer number (166257).

2^2129284 is an apocalyptic number.

It is an amenable number.

2129284 is a deficient number, since it is larger than the sum of its proper divisors (1860884).

2129284 is a wasteful number, since it uses less digits than its factorization.

2129284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 373 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 2129284 is about 1459.2066337569. The cubic root of 2129284 is about 128.6504166018.

It can be divided in two parts, 2 and 129284, that added together give a triangular number (129286 = T₅₀₈).

The spelling of 2129284 in words is "two million, one hundred twenty-nine thousand, two hundred eighty-four".