2099428 has 6 divisors (see below), whose sum is σ = 3674006. Its totient is φ = 1049712.

The previous prime is 2099411. The next prime is 2099431. The reversal of 2099428 is 8249902.

It can be written as a sum of positive squares in only one way, i.e., 1982464 + 116964 = 1408^2 + 342^2 .

It is a d-powerful number, because it can be written as 2 + 0 + 9² + 9² + 4³ + 2¹¹ + 8⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 2099393 and 2099402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262425 + ... + 262432.

2^2099428 is an apocalyptic number.

It is an amenable number.

2099428 is a deficient number, since it is larger than the sum of its proper divisors (1574578).

2099428 is a wasteful number, since it uses less digits than its factorization.

2099428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524861 (or 524859 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 2099428 is about 1448.9403024280. The cubic root of 2099428 is about 128.0462885972.

The spelling of 2099428 in words is "two million, ninety-nine thousand, four hundred twenty-eight".