1306413240 has 128 divisors (see below), whose sum is σ = 4293285120. Its totient is φ = 315392000.

The previous prime is 1306413239. The next prime is 1306413247. The reversal of 1306413240 is 423146031.

1306413240 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1306413240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306413247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337315 + ... + 341165.

It is an arithmetic number, because the mean of its divisors is an integer number (33541290).

Almost surely, 2^1306413240 is an apocalyptic number.

1306413240 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 1306413240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2146642560).

1306413240 is an abundant number, since it is smaller than the sum of its proper divisors (2986871880).

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

1306413240 is a wasteful number, since it uses less digits than its factorization.

1306413240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133 (or 4129 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1306413240 is about 36144.3389758341. The cubic root of 1306413240 is about 1093.1846487115.

Adding to 1306413240 its reverse (423146031), we get a palindrome (1729559271).

The spelling of 1306413240 in words is "one billion, three hundred six million, four hundred thirteen thousand, two hundred forty".