12020383528 has 16 divisors (see below), whose sum is σ = 23863996980. Its totient is φ = 5656651008.

The previous prime is 12020383523. The next prime is 12020383541. The reversal of 12020383528 is 82538302021.

It can be written as a sum of positive squares in 2 ways, for example, as 9991601764 + 2028781764 = 99958^2 + 45042^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 12020383493 and 12020383502.

It is not an unprimeable number, because it can be changed into a prime (12020383523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44192451 + ... + 44192722.

Almost surely, 2^12020383528 is an apocalyptic number.

It is an amenable number.

12020383528 is a deficient number, since it is larger than the sum of its proper divisors (11843613452).

12020383528 is a wasteful number, since it uses less digits than its factorization.

12020383528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88385196 (or 88385192 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 12020383528 its reverse (82538302021), we get a palindrome (94558685549).

The spelling of 12020383528 in words is "twelve billion, twenty million, three hundred eighty-three thousand, five hundred twenty-eight".