20342256270 has 192 divisors, whose sum is σ = 60879720960. Its totient is φ = 4257404928.

The previous prime is 20342256257. The next prime is 20342256301. The reversal of 20342256270 is 7265224302.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 2241001 + ... + 2250059.

It is an arithmetic number, because the mean of its divisors is an integer number (317081880).

Almost surely, 2^20342256270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20342256270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30439860480).

20342256270 is an abundant number, since it is smaller than the sum of its proper divisors (40537464690).

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

20342256270 is a wasteful number, since it uses less digits than its factorization.

20342256270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9147 (or 9130 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The spelling of 20342256270 in words is "twenty billion, three hundred forty-two million, two hundred fifty-six thousand, two hundred seventy".