1364220 has 144 divisors (see below), whose sum is σ = 4953312. Its totient is φ = 299520.

The previous prime is 1364213. The next prime is 1364221. The reversal of 1364220 is 224631.

It is a happy number.

1364220 is a `hidden beast` number, since 1 + 3 + 642 + 20 = 666.

It is a super-2 number, since 2×1364220² = 3722192416800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1364193 and 1364202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1364221) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 25714 + ... + 25766.

It is an arithmetic number, because the mean of its divisors is an integer number (34398).

2^1364220 is an apocalyptic number.

1364220 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 1364220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2476656).

1364220 is an abundant number, since it is smaller than the sum of its proper divisors (3589092).

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

1364220 is a wasteful number, since it uses less digits than its factorization.

1364220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1364220 is about 1167.9982876700. The cubic root of 1364220 is about 110.9076417033.

Adding to 1364220 its reverse (224631), we get a palindrome (1588851).

It can be divided in two parts, 136 and 4220, that added together give a square (4356 = 66²).

The spelling of 1364220 in words is "one million, three hundred sixty-four thousand, two hundred twenty".