20238204672 has 576 divisors, whose sum is σ = 71833681920. Its totient is φ = 5499187200.

The previous prime is 20238204671. The next prime is 20238204677. The reversal of 20238204672 is 27640283202.

It is a happy number.

20238204672 is a `hidden beast` number, since 202 + 382 + 0 + 4 + 6 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20238204671) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 154490047 + ... + 154490177.

Almost surely, 2^20238204672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20238204672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35916840960).

20238204672 is an abundant number, since it is smaller than the sum of its proper divisors (51595477248).

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

20238204672 is a wasteful number, since it uses less digits than its factorization.

20238204672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

Adding to 20238204672 its reverse (27640283202), we get a palindrome (47878487874).

The spelling of 20238204672 in words is "twenty billion, two hundred thirty-eight million, two hundred four thousand, six hundred seventy-two".