2156528 has 20 divisors (see below), whose sum is σ = 4558488. Its totient is φ = 980160.

The previous prime is 2156521. The next prime is 2156537. The reversal of 2156528 is 8256512.

2156528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2156528² = 9301226029568, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2156528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5951 + ... + 6302.

2^2156528 is an apocalyptic number.

It is an amenable number.

2156528 is an abundant number, since it is smaller than the sum of its proper divisors (2401960).

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

2156528 is a wasteful number, since it uses less digits than its factorization.

2156528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12272 (or 12266 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 2156528 is about 1468.5121722342. The cubic root of 2156528 is about 129.1967831729.

The spelling of 2156528 in words is "two million, one hundred fifty-six thousand, five hundred twenty-eight".