1306436 has 6 divisors (see below), whose sum is σ = 2286270. Its totient is φ = 653216.

The previous prime is 1306429. The next prime is 1306439. The reversal of 1306436 is 6346031.

It can be written as a sum of positive squares in only one way, i.e., 1188100 + 118336 = 1090^2 + 344^2 .

It is not an unprimeable number, because it can be changed into a prime (1306439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163301 + ... + 163308.

It is an arithmetic number, because the mean of its divisors is an integer number (381045).

2^1306436 is an apocalyptic number.

It is an amenable number.

1306436 is a deficient number, since it is larger than the sum of its proper divisors (979834).

1306436 is a wasteful number, since it uses less digits than its factorization.

1306436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326613 (or 326611 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1306436 is about 1142.9943131967. The cubic root of 1306436 is about 109.3190997070.

The spelling of 1306436 in words is "one million, three hundred six thousand, four hundred thirty-six".