20340011240 has 32 divisors (see below), whose sum is σ = 45819648000. Its totient is φ = 8126293824.

The previous prime is 20340011207. The next prime is 20340011249. The reversal of 20340011240 is 4211004302.

It is not an unprimeable number, because it can be changed into a prime (20340011249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269480 + ... + 336599.

It is an arithmetic number, because the mean of its divisors is an integer number (1431864000).

Almost surely, 2^20340011240 is an apocalyptic number.

20340011240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20340011240 is an abundant number, since it is smaller than the sum of its proper divisors (25479636760).

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

20340011240 is a wasteful number, since it uses less digits than its factorization.

20340011240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606929 (or 606925 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20340011240 its reverse (4211004302), we get a palindrome (24551015542).

The spelling of 20340011240 in words is "twenty billion, three hundred forty million, eleven thousand, two hundred forty".