2340136540 has 48 divisors (see below), whose sum is σ = 5746954752. Its totient is φ = 783671616.

The previous prime is 2340136531. The next prime is 2340136559. The reversal of 2340136540 is 456310432.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 2340136499 and 2340136508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188344 + ... + 200383.

It is an arithmetic number, because the mean of its divisors is an integer number (119728224).

Almost surely, 2^2340136540 is an apocalyptic number.

2340136540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2340136540 is an abundant number, since it is smaller than the sum of its proper divisors (3406818212).

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

2340136540 is a wasteful number, since it uses less digits than its factorization.

2340136540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388786 (or 388784 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 2340136540 is about 48374.9577777594. The cubic root of 2340136540 is about 1327.6402160486.

Adding to 2340136540 its reverse (456310432), we get a palindrome (2796446972).

The spelling of 2340136540 in words is "two billion, three hundred forty million, one hundred thirty-six thousand, five hundred forty".