1105220 has 24 divisors (see below), whose sum is σ = 2355864. Its totient is φ = 435456.

The previous prime is 1105217. The next prime is 1105231. The reversal of 1105220 is 225011.

1105220 = 30² + 31² + ... + 149².

It can be written as a sum of positive squares in 4 ways, for example, as 179776 + 925444 = 424^2 + 962^2 .

It is a super-2 number, since 2×1105220² = 2443022496800, which contains 22 as substring.

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, 1082 + ... + 1838.

It is an arithmetic number, because the mean of its divisors is an integer number (98161).

2^1105220 is an apocalyptic number.

1105220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1105220 is an abundant number, since it is smaller than the sum of its proper divisors (1250644).

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

1105220 is a wasteful number, since it uses less digits than its factorization.

1105220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1105220 is about 1051.2944402022. The cubic root of 1105220 is about 103.3910418781.

The spelling of 1105220 in words is "one million, one hundred five thousand, two hundred twenty".