1299876480 has 384 divisors, whose sum is σ = 5196222720. Its totient is φ = 293289984.

The previous prime is 1299876443. The next prime is 1299876481. The reversal of 1299876480 is 846789921.

1299876480 is a `hidden beast` number, since 1 + 2 + 9 + 98 + 76 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is not an unprimeable number, because it can be changed into a prime (1299876481) 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 47 ways as a sum of consecutive naturals, for example, 4152804 + ... + 4153116.

It is an arithmetic number, because the mean of its divisors is an integer number (13531830).

Almost surely, 2^1299876480 is an apocalyptic number.

1299876480 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 1299876480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598111360).

1299876480 is an abundant number, since it is smaller than the sum of its proper divisors (3896346240).

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

1299876480 is a wasteful number, since it uses less digits than its factorization.

1299876480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 1299876480 is about 36053.7997997437. The cubic root of 1299876480 is about 1091.3583155948.

The spelling of 1299876480 in words is "one billion, two hundred ninety-nine million, eight hundred seventy-six thousand, four hundred eighty".