21273883248 has 40 divisors (see below), whose sum is σ = 55524116368. Its totient is φ = 7018186752.

The previous prime is 21273883247. The next prime is 21273883259. The reversal of 21273883248 is 84238837212.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 21273883197 and 21273883206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21273883247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2279911 + ... + 2289222.

Almost surely, 2^21273883248 is an apocalyptic number.

It is an amenable number.

21273883248 is an abundant number, since it is smaller than the sum of its proper divisors (34250233120).

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

21273883248 is a wasteful number, since it uses less digits than its factorization.

21273883248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4569241 (or 4569235 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The spelling of 21273883248 in words is "twenty-one billion, two hundred seventy-three million, eight hundred eighty-three thousand, two hundred forty-eight".