1320436 has 24 divisors (see below), whose sum is σ = 2532320. Its totient is φ = 598752.

The previous prime is 1320433. The next prime is 1320437. The reversal of 1320436 is 6340231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3295 + ... + 3673.

2^1320436 is an apocalyptic number.

It is an amenable number.

1320436 is a deficient number, since it is larger than the sum of its proper divisors (1211884).

1320436 is a wasteful number, since it uses less digits than its factorization.

1320436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1320436 is about 1149.1022582869. The cubic root of 1320436 is about 109.7082073740.

Adding to 1320436 its reverse (6340231), we get a palindrome (7660667).

It can be divided in two parts, 13 and 20436, that added together give a square (20449 = 143²).

The spelling of 1320436 in words is "one million, three hundred twenty thousand, four hundred thirty-six".