21882047238 has 32 divisors (see below), whose sum is σ = 48757183200. Its totient is φ = 7274454048.

The previous prime is 21882047207. The next prime is 21882047251. The reversal of 21882047238 is 83274028812.

It is a junction number, because it is equal to n+sod(n) for n = 21882047193 and 21882047202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523053 + ... + 563336.

It is an arithmetic number, because the mean of its divisors is an integer number (1523661975).

Almost surely, 2^21882047238 is an apocalyptic number.

21882047238 is an abundant number, since it is smaller than the sum of its proper divisors (26875135962).

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

21882047238 is a wasteful number, since it uses less digits than its factorization.

21882047238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086773 (or 1086767 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 21882047238 in words is "twenty-one billion, eight hundred eighty-two million, forty-seven thousand, two hundred thirty-eight".