2169428 has 12 divisors (see below), whose sum is σ = 3806880. Its totient is φ = 1081752.

The previous prime is 2169397. The next prime is 2169443. The reversal of 2169428 is 8249612.

It is a junction number, because it is equal to n+sod(n) for n = 2169394 and 2169403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225 + ... + 3047.

It is an arithmetic number, because the mean of its divisors is an integer number (317240).

2^2169428 is an apocalyptic number.

It is an amenable number.

2169428 is a deficient number, since it is larger than the sum of its proper divisors (1637452).

2169428 is a wasteful number, since it uses less digits than its factorization.

2169428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486 (or 1484 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 2169428 is about 1472.8978240190. The cubic root of 2169428 is about 129.4538825963.

The spelling of 2169428 in words is "two million, one hundred sixty-nine thousand, four hundred twenty-eight".