3615216 has 80 divisors (see below), whose sum is σ = 10499328. Its totient is φ = 1062400.

The previous prime is 3615211. The next prime is 3615217. The reversal of 3615216 is 6125163.

3615216 = T₂₅₅ + T₂₅₆ + ... + T₃₃₆.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3615211) 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, 21565 + ... + 21731.

Almost surely, 2^3615216 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 3615216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5249664).

3615216 is an abundant number, since it is smaller than the sum of its proper divisors (6884112).

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

3615216 is a wasteful number, since it uses less digits than its factorization.

3615216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 224 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 3615216 is about 1901.3721361164. The cubic root of 3615216 is about 153.4775119401.

The spelling of 3615216 in words is "three million, six hundred fifteen thousand, two hundred sixteen".