20293880838 has 64 divisors (see below), whose sum is σ = 51460669440. Its totient is φ = 5181789600.

The previous prime is 20293880801. The next prime is 20293880839. The reversal of 20293880838 is 83808839202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20293880839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344998 + ... + 399513.

It is an arithmetic number, because the mean of its divisors is an integer number (804072960).

Almost surely, 2^20293880838 is an apocalyptic number.

20293880838 is an abundant number, since it is smaller than the sum of its proper divisors (31166788602).

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

20293880838 is a wasteful number, since it uses less digits than its factorization.

20293880838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744593.

The product of its (nonzero) digits is 1327104, while the sum is 51.

The spelling of 20293880838 in words is "twenty billion, two hundred ninety-three million, eight hundred eighty thousand, eight hundred thirty-eight".