1260722880 has 336 divisors, whose sum is σ = 4650906624. Its totient is φ = 324725760.

The previous prime is 1260722861. The next prime is 1260722893. The reversal of 1260722880 is 882270621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2410299 + ... + 2410821.

It is an arithmetic number, because the mean of its divisors is an integer number (13841984).

Almost surely, 2^1260722880 is an apocalyptic number.

1260722880 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 1260722880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2325453312).

1260722880 is an abundant number, since it is smaller than the sum of its proper divisors (3390183744).

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

1260722880 is an equidigital number, since it uses as much as digits as its factorization.

1260722880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1260722880 is about 35506.6596570277. The cubic root of 1260722880 is about 1080.2888116485.

The spelling of 1260722880 in words is "one billion, two hundred sixty million, seven hundred twenty-two thousand, eight hundred eighty".