20275906392 has 576 divisors, whose sum is σ = 73945872000. Its totient is φ = 5157540864.

The previous prime is 20275906379. The next prime is 20275906393. The reversal of 20275906392 is 29360957202.

It is a happy number.

20275906392 is a `hidden beast` number, since 2 + 0 + 2 + 7 + 5 + 9 + 0 + 639 + 2 = 666.

It is a super-2 number, since 2×20275906392² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20275906393) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 30767359 + ... + 30768017.

It is an arithmetic number, because the mean of its divisors is an integer number (128378250).

Almost surely, 2^20275906392 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 20275906392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36972936000).

20275906392 is an abundant number, since it is smaller than the sum of its proper divisors (53669965608).

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

20275906392 is a wasteful number, since it uses less digits than its factorization.

20275906392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 20275906392 in words is "twenty billion, two hundred seventy-five million, nine hundred six thousand, three hundred ninety-two".