1305238 has 16 divisors (see below), whose sum is σ = 2165760. Its totient is φ = 585000.

The previous prime is 1305233. The next prime is 1305247. The reversal of 1305238 is 8325031.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305233) 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, 1363 + ... + 2113.

It is an arithmetic number, because the mean of its divisors is an integer number (135360).

2^1305238 is an apocalyptic number.

1305238 is a deficient number, since it is larger than the sum of its proper divisors (860522).

1305238 is a wasteful number, since it uses less digits than its factorization.

1305238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1305238 is about 1142.4701309006. The cubic root of 1305238 is about 109.2856743336.

The spelling of 1305238 in words is "one million, three hundred five thousand, two hundred thirty-eight".