1136640240 has 120 divisors (see below), whose sum is σ = 3836882400. Its totient is φ = 301542912.

The previous prime is 1136640209. The next prime is 1136640257. The reversal of 1136640240 is 420466311.

1136640240 is a `hidden beast` number, since 1 + 13 + 6 + 640 + 2 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139314 + ... + 147246.

It is an arithmetic number, because the mean of its divisors is an integer number (31974020).

Almost surely, 2^1136640240 is an apocalyptic number.

1136640240 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 1136640240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1918441200).

1136640240 is an abundant number, since it is smaller than the sum of its proper divisors (2700242160).

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

1136640240 is a wasteful number, since it uses less digits than its factorization.

1136640240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8151 (or 8142 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1136640240 is about 33714.0955684711. The cubic root of 1136640240 is about 1043.6166734691.

The spelling of 1136640240 in words is "one billion, one hundred thirty-six million, six hundred forty thousand, two hundred forty".