2123538 has 32 divisors (see below), whose sum is σ = 4561920. Its totient is φ = 656640.

The previous prime is 2123491. The next prime is 2123557. The reversal of 2123538 is 8353212.

It is a d-powerful number, because it can be written as 2⁷ + 1 + 2²¹ + 3⁸ + 5 + 3⁹ + 8 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11023 + ... + 11213.

It is an arithmetic number, because the mean of its divisors is an integer number (142560).

2^2123538 is an apocalyptic number.

2123538 is an abundant number, since it is smaller than the sum of its proper divisors (2438382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123538 is a wasteful number, since it uses less digits than its factorization.

2123538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322.

The product of its digits is 1440, while the sum is 24.

The square root of 2123538 is about 1457.2364255672. The cubic root of 2123538 is about 128.5345887397.

The spelling of 2123538 in words is "two million, one hundred twenty-three thousand, five hundred thirty-eight".