1300845 has 32 divisors (see below), whose sum is σ = 2564352. Its totient is φ = 548352.

The previous prime is 1300843. The next prime is 1300907. The reversal of 1300845 is 5480031.

It is not a de Polignac number, because 1300845 - 2¹ = 1300843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 889 + ... + 1841.

It is an arithmetic number, because the mean of its divisors is an integer number (80136).

2^1300845 is an apocalyptic number.

1300845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1300845 is a deficient number, since it is larger than the sum of its proper divisors (1263507).

1300845 is a wasteful number, since it uses less digits than its factorization.

1300845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1300845 is about 1140.5459219163. The cubic root of 1300845 is about 109.1629300303.

Adding to 1300845 its reverse (5480031), we get a palindrome (6780876).

It can be divided in two parts, 1300 and 845, that added together give a triangular number (2145 = T₆₅).

The spelling of 1300845 in words is "one million, three hundred thousand, eight hundred forty-five".