1306536000 has 672 divisors, whose sum is σ = 5528974464. Its totient is φ = 268800000.

The previous prime is 1306535987. The next prime is 1306536001. The reversal of 1306536000 is 6356031.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1306536001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12935950 + ... + 12936050.

Almost surely, 2^1306536000 is an apocalyptic number.

1306536000 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 1306536000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2764487232).

1306536000 is an abundant number, since it is smaller than the sum of its proper divisors (4222438464).

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

1306536000 is a wasteful number, since it uses less digits than its factorization.

1306536000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 1306536000 is about 36146.0371271873. The cubic root of 1306536000 is about 1093.2188888075.

The spelling of 1306536000 in words is "one billion, three hundred six million, five hundred thirty-six thousand".