20736241128 has 48 divisors (see below), whose sum is σ = 59116480800. Its totient is φ = 6548286240.

The previous prime is 20736241121. The next prime is 20736241153. The reversal of 20736241128 is 82114263702.

It is a happy number.

20736241128 is a `hidden beast` number, since 2 + 0 + 7 + 3 + 624 + 1 + 1 + 28 = 666.

It is a super-2 number, since 2×20736241128² (a number of 21 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 20736241092 and 20736241101.

It is not an unprimeable number, because it can be changed into a prime (20736241121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7577668 + ... + 7580403.

It is an arithmetic number, because the mean of its divisors is an integer number (1231593350).

Almost surely, 2^20736241128 is an apocalyptic number.

It is an amenable number.

20736241128 is an abundant number, since it is smaller than the sum of its proper divisors (38380239672).

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

20736241128 is a wasteful number, since it uses less digits than its factorization.

20736241128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15158102 (or 15158095 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 20736241128 in words is "twenty billion, seven hundred thirty-six million, two hundred forty-one thousand, one hundred twenty-eight".