20522128628 has 24 divisors (see below), whose sum is σ = 36275441664. Its totient is φ = 10158069600.

The previous prime is 20522128579. The next prime is 20522128673. The reversal of 20522128628 is 82682122502.

It is a junction number, because it is equal to n+sod(n) for n = 20522128591 and 20522128600.

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 7 ways as a sum of consecutive naturals, for example, 190373 + ... + 278003.

It is an arithmetic number, because the mean of its divisors is an integer number (1511476736).

Almost surely, 2^20522128628 is an apocalyptic number.

It is an amenable number.

20522128628 is a deficient number, since it is larger than the sum of its proper divisors (15753313036).

20522128628 is a wasteful number, since it uses less digits than its factorization.

20522128628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88223 (or 88221 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The spelling of 20522128628 in words is "twenty billion, five hundred twenty-two million, one hundred twenty-eight thousand, six hundred twenty-eight".