20120748283740 has 192 divisors, whose sum is σ = 62158510270080. Its totient is φ = 4831461949440.

The previous prime is 20120748283729. The next prime is 20120748283849. The reversal of 20120748283740 is 4738284702102.

It is a happy number.

It is a super-2 number, since 2×20120748283740² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20120748283740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 338606512 + ... + 338665928.

It is an arithmetic number, because the mean of its divisors is an integer number (323742240990).

Almost surely, 2^{20120748283740} is an apocalyptic number.

20120748283740 is a gapful number since it is divisible by the number (20) 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 20120748283740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31079255135040).

20120748283740 is an abundant number, since it is smaller than the sum of its proper divisors (42037761986340).

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

20120748283740 is a wasteful number, since it uses less digits than its factorization.

20120748283740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70072 (or 70070 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 48.

The spelling of 20120748283740 in words is "twenty trillion, one hundred twenty billion, seven hundred forty-eight million, two hundred eighty-three thousand, seven hundred forty".