2166528 has 144 divisors (see below), whose sum is σ = 7325696. Its totient is φ = 552960.

The previous prime is 2166523. The next prime is 2166529. The reversal of 2166528 is 8256612.

It is a junction number, because it is equal to n+sod(n) for n = 2166495 and 2166504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69873 + ... + 69903.

2^2166528 is an apocalyptic number.

2166528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3662848).

2166528 is an abundant number, since it is smaller than the sum of its proper divisors (5159168).

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

2166528 is a wasteful number, since it uses less digits than its factorization.

2166528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 56 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 2166528 is about 1471.9130409097. The cubic root of 2166528 is about 129.3961740414.

The spelling of 2166528 in words is "two million, one hundred sixty-six thousand, five hundred twenty-eight".