1301520 has 160 divisors (see below), whose sum is σ = 4821120. Its totient is φ = 286720.

The previous prime is 1301507. The next prime is 1301527. The reversal of 1301520 is 251031.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1301496 and 1301505.

It is not an unprimeable number, because it can be changed into a prime (1301527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44866 + ... + 44894.

It is an arithmetic number, because the mean of its divisors is an integer number (30132).

2^1301520 is an apocalyptic number.

1301520 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 1301520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2410560).

1301520 is an abundant number, since it is smaller than the sum of its proper divisors (3519600).

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

1301520 is a wasteful number, since it uses less digits than its factorization.

1301520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1301520 is about 1140.8417944658. The cubic root of 1301520 is about 109.1818080766.

Adding to 1301520 its reverse (251031), we get a palindrome (1552551).

The spelling of 1301520 in words is "one million, three hundred one thousand, five hundred twenty".