20481207428 has 48 divisors (see below), whose sum is σ = 41212100160. Its totient is φ = 8818992000.

The previous prime is 20481207427. The next prime is 20481207433. The reversal of 20481207428 is 82470218402.

It is a junction number, because it is equal to n+sod(n) for n = 20481207391 and 20481207400.

It is not an unprimeable number, because it can be changed into a prime (20481207427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83798 + ... + 219053.

It is an arithmetic number, because the mean of its divisors is an integer number (858585420).

Almost surely, 2^20481207428 is an apocalyptic number.

It is an amenable number.

20481207428 is an abundant number, since it is smaller than the sum of its proper divisors (20730892732).

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

20481207428 is a wasteful number, since it uses less digits than its factorization.

20481207428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302948 (or 302946 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 38.

The spelling of 20481207428 in words is "twenty billion, four hundred eighty-one million, two hundred seven thousand, four hundred twenty-eight".