2215536 has 40 divisors (see below), whose sum is σ = 5792784. Its totient is φ = 729600.

The previous prime is 2215531. The next prime is 2215537. The reversal of 2215536 is 6355122.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 2¹² + 2¹⁶ + 1 + 5⁶ + 5⁹ + 3¹¹ + 6 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4620 + ... + 5076.

2^2215536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2896392).

2215536 is an abundant number, since it is smaller than the sum of its proper divisors (3577248).

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

2215536 is a wasteful number, since it uses less digits than its factorization.

2215536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 563 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 2215536 is about 1488.4676684430. The cubic root of 2215536 is about 130.3645781817.

The spelling of 2215536 in words is "two million, two hundred fifteen thousand, five hundred thirty-six".