1461220 has 12 divisors (see below), whose sum is σ = 3068604. Its totient is φ = 584480.

The previous prime is 1461211. The next prime is 1461283. The reversal of 1461220 is 221641.

It can be written as a sum of positive squares in 2 ways, for example, as 224676 + 1236544 = 474^2 + 1112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1461194 and 1461203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36511 + ... + 36550.

It is an arithmetic number, because the mean of its divisors is an integer number (255717).

2^1461220 is an apocalyptic number.

1461220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1461220 is an abundant number, since it is smaller than the sum of its proper divisors (1607384).

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

1461220 is a wasteful number, since it uses less digits than its factorization.

1461220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73070 (or 73068 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1461220 is about 1208.8093315325. The cubic root of 1461220 is about 113.4763093639.

Adding to 1461220 its reverse (221641), we get a palindrome (1682861).

It can be divided in two parts, 1461 and 220, that added together give a square (1681 = 41²).

The spelling of 1461220 in words is "one million, four hundred sixty-one thousand, two hundred twenty".