21424077282 has 8 divisors (see below), whose sum is σ = 42848154576. Its totient is φ = 7141359092.

The previous prime is 21424077253. The next prime is 21424077299. The reversal of 21424077282 is 28277042412.

It is a sphenic number, since it is the product of 3 distinct primes.

21424077282 is an admirable number.

It is a super-3 number, since 3×21424077282³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21424077282.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1785339768 + ... + 1785339779.

It is an arithmetic number, because the mean of its divisors is an integer number (5356019322).

Almost surely, 2^21424077282 is an apocalyptic number.

21424077282 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21424077282 is a wasteful number, since it uses less digits than its factorization.

21424077282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570679552.

The product of its (nonzero) digits is 100352, while the sum is 39.

The spelling of 21424077282 in words is "twenty-one billion, four hundred twenty-four million, seventy-seven thousand, two hundred eighty-two".