20603225028 has 48 divisors (see below), whose sum is σ = 48772934784. Its totient is φ = 6768007680.

The previous prime is 20603225023. The next prime is 20603225029. The reversal of 20603225028 is 82052230602.

It is a junction number, because it is equal to n+sod(n) for n = 20603224986 and 20603225004.

It is not an unprimeable number, because it can be changed into a prime (20603225023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2737126 + ... + 2744642.

It is an arithmetic number, because the mean of its divisors is an integer number (1016102808).

Almost surely, 2^20603225028 is an apocalyptic number.

It is an amenable number.

20603225028 is an abundant number, since it is smaller than the sum of its proper divisors (28169709756).

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

20603225028 is a wasteful number, since it uses less digits than its factorization.

20603225028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812 (or 10810 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 20603225028 in words is "twenty billion, six hundred three million, two hundred twenty-five thousand, twenty-eight".