1299475520 has 112 divisors (see below), whose sum is σ = 3632240640. Its totient is φ = 433465344.

The previous prime is 1299475477. The next prime is 1299475549. The reversal of 1299475520 is 255749921.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

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, 75041 + ... + 90719.

It is an arithmetic number, because the mean of its divisors is an integer number (32430720).

Almost surely, 2^1299475520 is an apocalyptic number.

1299475520 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 1299475520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816120320).

1299475520 is an abundant number, since it is smaller than the sum of its proper divisors (2332765120).

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

1299475520 is a wasteful number, since it uses less digits than its factorization.

1299475520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15740 (or 15730 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 1299475520 is about 36048.2387919299. The cubic root of 1299475520 is about 1091.2460905647.

The spelling of 1299475520 in words is "one billion, two hundred ninety-nine million, four hundred seventy-five thousand, five hundred twenty".