2015220 has 24 divisors (see below), whose sum is σ = 5642784. Its totient is φ = 537376.

The previous prime is 2015213. The next prime is 2015267. The reversal of 2015220 is 225102.

It is a super-2 number, since 2×2015220² = 8122223296800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2015196 and 2015205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16734 + ... + 16853.

It is an arithmetic number, because the mean of its divisors is an integer number (235116).

2^2015220 is an apocalyptic number.

2015220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2015220 is an abundant number, since it is smaller than the sum of its proper divisors (3627564).

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

2015220 is a wasteful number, since it uses less digits than its factorization.

2015220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33599 (or 33597 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 2015220 is about 1419.5844462377. The cubic root of 2015220 is about 126.3108976541.

The spelling of 2015220 in words is "two million, fifteen thousand, two hundred twenty".