1299810960 has 240 divisors, whose sum is σ = 5206166784. Its totient is φ = 284156928.

The previous prime is 1299810949. The next prime is 1299810971. The reversal of 1299810960 is 690189921.

It is an interprime number because it is at equal distance from previous prime (1299810949) and next prime (1299810971).

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×1299810960² = 3379017063472243200, which contains 22 as substring.

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

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, 110314 + ... + 121526.

Almost surely, 2^1299810960 is an apocalyptic number.

1299810960 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 1299810960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2603083392).

1299810960 is an abundant number, since it is smaller than the sum of its proper divisors (3906355824).

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

1299810960 is a wasteful number, since it uses less digits than its factorization.

1299810960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11262 (or 11253 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 1299810960 is about 36052.8911462035. The cubic root of 1299810960 is about 1091.3399787247.

The spelling of 1299810960 in words is "one billion, two hundred ninety-nine million, eight hundred ten thousand, nine hundred sixty".