1320541280 has 24 divisors (see below), whose sum is σ = 3119779152. Its totient is φ = 528216448.

The previous prime is 1320541279. The next prime is 1320541289. The reversal of 1320541280 is 821450231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320541289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4126532 + ... + 4126851.

It is an arithmetic number, because the mean of its divisors is an integer number (129990798).

Almost surely, 2^1320541280 is an apocalyptic number.

1320541280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320541280 is an abundant number, since it is smaller than the sum of its proper divisors (1799237872).

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

1320541280 is an equidigital number, since it uses as much as digits as its factorization.

1320541280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253398 (or 8253390 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1320541280 is about 36339.2526065135. The cubic root of 1320541280 is about 1097.1112302029. Note that the first 3 decimals are identical.

The spelling of 1320541280 in words is "one billion, three hundred twenty million, five hundred forty-one thousand, two hundred eighty".