1365626240 has 128 divisors (see below), whose sum is σ = 3684852000. Its totient is φ = 479395840.

The previous prime is 1365626233. The next prime is 1365626243. The reversal of 1365626240 is 426265631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 1365626240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1365626243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200816 + ... + 207504.

Almost surely, 2^1365626240 is an apocalyptic number.

1365626240 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 1365626240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1842426000).

1365626240 is an abundant number, since it is smaller than the sum of its proper divisors (2319225760).

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

1365626240 is a wasteful number, since it uses less digits than its factorization.

1365626240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748 (or 6736 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1365626240 is about 36954.3805251827. The cubic root of 1365626240 is about 1109.4573653744.

The spelling of 1365626240 in words is "one billion, three hundred sixty-five million, six hundred twenty-six thousand, two hundred forty".