2215044 has 36 divisors (see below), whose sum is σ = 6031116. Its totient is φ = 681408.

The previous prime is 2215013. The next prime is 2215051. The reversal of 2215044 is 4405122.

2215044 = T₂₅₉ + T₂₆₀ + ... + T₃₁₂.

It can be written as a sum of positive squares in 2 ways, for example, as 360000 + 1855044 = 600^2 + 1362^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 1899 + ... + 2834.

It is an arithmetic number, because the mean of its divisors is an integer number (167531).

2^2215044 is an apocalyptic number.

It is an amenable number.

2215044 is an abundant number, since it is smaller than the sum of its proper divisors (3816072).

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

2215044 is a wasteful number, since it uses less digits than its factorization.

2215044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756 (or 4751 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2215044 is about 1488.3023886294. The cubic root of 2215044 is about 130.3549275267.

The spelling of 2215044 in words is "two million, two hundred fifteen thousand, forty-four".