2128522 has 16 divisors (see below), whose sum is σ = 3596544. Its totient is φ = 936000.

The previous prime is 2128501. The next prime is 2128531. The reversal of 2128522 is 2258212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2128493 and 2128502.

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, 879 + ... + 2242.

It is an arithmetic number, because the mean of its divisors is an integer number (224784).

2^2128522 is an apocalyptic number.

2128522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2128522 is a deficient number, since it is larger than the sum of its proper divisors (1468022).

2128522 is a wasteful number, since it uses less digits than its factorization.

2128522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165.

The product of its digits is 640, while the sum is 22.

The square root of 2128522 is about 1458.9455096062. The cubic root of 2128522 is about 128.6350682008.

The spelling of 2128522 in words is "two million, one hundred twenty-eight thousand, five hundred twenty-two".