2215528 has 16 divisors (see below), whose sum is σ = 4747680. Its totient is φ = 949488.

The previous prime is 2215501. The next prime is 2215529. The reversal of 2215528 is 8255122.

It is not an unprimeable number, because it can be changed into a prime (2215529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19726 + ... + 19837.

It is an arithmetic number, because the mean of its divisors is an integer number (296730).

2^2215528 is an apocalyptic number.

2215528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2215528 is an abundant number, since it is smaller than the sum of its proper divisors (2532152).

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

2215528 is a wasteful number, since it uses less digits than its factorization.

2215528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39576 (or 39572 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 2215528 is about 1488.4649811131. The cubic root of 2215528 is about 130.3644212719.

It can be divided in two parts, 2 and 215528, that multiplied together give a triangular number (431056 = T₉₂₈).

The spelling of 2215528 in words is "two million, two hundred fifteen thousand, five hundred twenty-eight".