2169928 has 8 divisors (see below), whose sum is σ = 4068630. Its totient is φ = 1084960.

The previous prime is 2169913. The next prime is 2169941. The reversal of 2169928 is 8299612.

2169928 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1205604 + 964324 = 1098^2 + 982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135613 + ... + 135628.

2^2169928 is an apocalyptic number.

It is an amenable number.

2169928 is a deficient number, since it is larger than the sum of its proper divisors (1898702).

2169928 is a wasteful number, since it uses less digits than its factorization.

2169928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271247 (or 271243 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The square root of 2169928 is about 1473.0675476705. The cubic root of 2169928 is about 129.4638271484.

The spelling of 2169928 in words is "two million, one hundred sixty-nine thousand, nine hundred twenty-eight".