20606262828 has 48 divisors (see below), whose sum is σ = 49936642560. Its totient is φ = 6608657344.

The previous prime is 20606262821. The next prime is 20606262871. The reversal of 20606262828 is 82826260602.

It is a super-2 number, since 2×20606262828² (a number of 21 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 20606262828.

It is not an unprimeable number, because it can be changed into a prime (20606262821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276351 + ... + 342902.

It is an arithmetic number, because the mean of its divisors is an integer number (1040346720).

Almost surely, 2^20606262828 is an apocalyptic number.

It is an amenable number.

20606262828 is an abundant number, since it is smaller than the sum of its proper divisors (29330379732).

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

20606262828 is a wasteful number, since it uses less digits than its factorization.

20606262828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619366 (or 619364 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 20606262828 in words is "twenty billion, six hundred six million, two hundred sixty-two thousand, eight hundred twenty-eight".