1579220 has 18 divisors (see below), whose sum is σ = 3328206. Its totient is φ = 629440.

The previous prime is 1579219. The next prime is 1579231. The reversal of 1579220 is 229751.

It can be written as a sum of positive squares in 3 ways, for example, as 364816 + 1214404 = 604^2 + 1102^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1579220.

It is a congruent number.

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, 5480 + ... + 5760.

2^1579220 is an apocalyptic number.

1579220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1579220 is an abundant number, since it is smaller than the sum of its proper divisors (1748986).

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

1579220 is an equidigital number, since it uses as much as digits as its factorization.

1579220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1579220 is about 1256.6702033549. The cubic root of 1579220 is about 116.4521591284.

The spelling of 1579220 in words is "one million, five hundred seventy-nine thousand, two hundred twenty".