1299446928 has 160 divisors (see below), whose sum is σ = 4110986880. Its totient is φ = 390458880.

The previous prime is 1299446927. The next prime is 1299446957. The reversal of 1299446928 is 8296449921.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1299446927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238798 + ... + 244178.

It is an arithmetic number, because the mean of its divisors is an integer number (25693668).

Almost surely, 2^1299446928 is an apocalyptic number.

1299446928 is a gapful number since it is divisible by the number (18) 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 1299446928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2055493440).

1299446928 is an abundant number, since it is smaller than the sum of its proper divisors (2811539952).

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

1299446928 is a wasteful number, since it uses less digits than its factorization.

1299446928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5454 (or 5442 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 1299446928 is about 36047.8422100408. The cubic root of 1299446928 is about 1091.2380870442.

The spelling of 1299446928 in words is "one billion, two hundred ninety-nine million, four hundred forty-six thousand, nine hundred twenty-eight".