2129788 has 6 divisors (see below), whose sum is σ = 3727136. Its totient is φ = 1064892.

The previous prime is 2129783. The next prime is 2129791. The reversal of 2129788 is 8879212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129783) by changing a digit.

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 as a sum of consecutive naturals, namely, 266220 + ... + 266227.

2^2129788 is an apocalyptic number.

It is an amenable number.

2129788 is a deficient number, since it is larger than the sum of its proper divisors (1597348).

2129788 is a wasteful number, since it uses less digits than its factorization.

2129788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532451 (or 532449 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 2129788 is about 1459.3793201221. The cubic root of 2129788 is about 128.6605662882.

It can be divided in two parts, 212 and 9788, that added together give a 4-th power (10000 = 10⁴).

The spelling of 2129788 in words is "two million, one hundred twenty-nine thousand, seven hundred eighty-eight".