1568240136 has 32 divisors (see below), whose sum is σ = 4356223200. Its totient is φ = 522746640.

The previous prime is 1568240131. The next prime is 1568240159. The reversal of 1568240136 is 6310428651.

It is a happy number.

It is a super-2 number, since 2×1568240136² = 4918754248322596992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1568240136.

It is not an unprimeable number, because it can be changed into a prime (1568240131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3629970 + ... + 3630401.

It is an arithmetic number, because the mean of its divisors is an integer number (136131975).

Almost surely, 2^1568240136 is an apocalyptic number.

It is an amenable number.

1568240136 is an abundant number, since it is smaller than the sum of its proper divisors (2787983064).

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

1568240136 is a wasteful number, since it uses less digits than its factorization.

1568240136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7260386 (or 7260376 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1568240136 is about 39601.0118052557. The cubic root of 1568240136 is about 1161.8164505974.

Adding to 1568240136 its reverse (6310428651), we get a palindrome (7878668787).

The spelling of 1568240136 in words is "one billion, five hundred sixty-eight million, two hundred forty thousand, one hundred thirty-six".