2220516 has 18 divisors (see below), whose sum is σ = 5613062. Its totient is φ = 740160.

The previous prime is 2220503. The next prime is 2220521. The reversal of 2220516 is 6150222.

It can be written as a sum of positive squares in only one way, i.e., 2090916 + 129600 = 1446^2 + 360^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30805 + ... + 30876.

2^2220516 is an apocalyptic number.

It is an amenable number.

2220516 is an abundant number, since it is smaller than the sum of its proper divisors (3392546).

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

2220516 is a wasteful number, since it uses less digits than its factorization.

2220516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61691 (or 61686 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2220516 is about 1490.1395907766. The cubic root of 2220516 is about 130.4621813168.

Adding to 2220516 its reverse (6150222), we get a palindrome (8370738).

The spelling of 2220516 in words is "two million, two hundred twenty thousand, five hundred sixteen".