2221580 has 24 divisors (see below), whose sum is σ = 4711392. Its totient is φ = 879872.

The previous prime is 2221567. The next prime is 2221589. The reversal of 2221580 is 851222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2221589) 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, 1769 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (196308).

2^2221580 is an apocalyptic number.

2221580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221580 is an abundant number, since it is smaller than the sum of its proper divisors (2489812).

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

2221580 is a wasteful number, since it uses less digits than its factorization.

2221580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2221580 is about 1490.4965615526. The cubic root of 2221580 is about 130.4830157528.

The spelling of 2221580 in words is "two million, two hundred twenty-one thousand, five hundred eighty".