20224147128 has 16 divisors (see below), whose sum is σ = 50560367880. Its totient is φ = 6741382368.

The previous prime is 20224147091. The next prime is 20224147159. The reversal of 20224147128 is 82174142202.

It is a super-2 number, since 2×20224147128² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421336375 + ... + 421336422.

Almost surely, 2^20224147128 is an apocalyptic number.

It is an amenable number.

20224147128 is an abundant number, since it is smaller than the sum of its proper divisors (30336220752).

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

20224147128 is a wasteful number, since it uses less digits than its factorization.

20224147128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842672806 (or 842672802 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The spelling of 20224147128 in words is "twenty billion, two hundred twenty-four million, one hundred forty-seven thousand, one hundred twenty-eight".