1541220 has 48 divisors (see below), whose sum is σ = 4572288. Its totient is φ = 386560.

The previous prime is 1541209. The next prime is 1541251. The reversal of 1541220 is 221451.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1541220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265 + ... + 1775.

It is an arithmetic number, because the mean of its divisors is an integer number (95256).

2^1541220 is an apocalyptic number.

1541220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1541220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286144).

1541220 is an abundant number, since it is smaller than the sum of its proper divisors (3031068).

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

1541220 is a wasteful number, since it uses less digits than its factorization.

1541220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1541220 is about 1241.4588192929. The cubic root of 1541220 is about 115.5105217078.

Adding to 1541220 its reverse (221451), we get a palindrome (1762671).

The spelling of 1541220 in words is "one million, five hundred forty-one thousand, two hundred twenty".