1301880 has 64 divisors (see below), whose sum is σ = 4118400. Its totient is φ = 328320.

The previous prime is 1301879. The next prime is 1301887. The reversal of 1301880 is 881031.

It is a happy number.

It is a Cunningham number, because it is equal to 1141²-1.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301887) 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 15 ways as a sum of consecutive naturals, for example, 1995 + ... + 2565.

It is an arithmetic number, because the mean of its divisors is an integer number (64350).

2^1301880 is an apocalyptic number.

1301880 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 1301880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059200).

1301880 is an abundant number, since it is smaller than the sum of its proper divisors (2816520).

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

1301880 is a wasteful number, since it uses less digits than its factorization.

1301880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1301880 is about 1140.9995617878. Note that the first 3 decimals coincide. The cubic root of 1301880 is about 109.1918736992.

The spelling of 1301880 in words is "one million, three hundred one thousand, eight hundred eighty".