20295857092928 has 56 divisors (see below), whose sum is σ = 40685139742080. Its totient is φ = 10044541555200.

The previous prime is 20295857092873. The next prime is 20295857092943. The reversal of 20295857092928 is 82929075859202.

It is a super-2 number, since 2×20295857092928² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21931493 + ... + 22838171.

Almost surely, 2^{20295857092928} 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 20295857092928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20342569871040).

20295857092928 is an abundant number, since it is smaller than the sum of its proper divisors (20389282649152).

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

20295857092928 is a wasteful number, since it uses less digits than its factorization.

20295857092928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910255 (or 910245 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 68.

The spelling of 20295857092928 in words is "twenty trillion, two hundred ninety-five billion, eight hundred fifty-seven million, ninety-two thousand, nine hundred twenty-eight".