1299602880 has 252 divisors, whose sum is σ = 4649282040. Its totient is φ = 346000896.

The previous prime is 1299602873. The next prime is 1299602881. The reversal of 1299602880 is 882069921.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299602881) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2099211 + ... + 2099829.

Almost surely, 2^1299602880 is an apocalyptic number.

1299602880 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 1299602880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2324641020).

1299602880 is an abundant number, since it is smaller than the sum of its proper divisors (3349679160).

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

1299602880 is an frugal number, since it uses more digits than its factorization.

1299602880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1299602880 is about 36050.0052704573. The cubic root of 1299602880 is about 1091.2817399632.

The spelling of 1299602880 in words is "one billion, two hundred ninety-nine million, six hundred two thousand, eight hundred eighty".