282121428 has 12 divisors (see below), whose sum is σ = 658283360. Its totient is φ = 94040472.

The previous prime is 282121423. The next prime is 282121447. The reversal of 282121428 is 824121282.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 282121395 and 282121404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (282121423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11755048 + ... + 11755071.

Almost surely, 2^282121428 is an apocalyptic number.

It is an amenable number.

282121428 is an abundant number, since it is smaller than the sum of its proper divisors (376161932).

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

282121428 is a wasteful number, since it uses less digits than its factorization.

282121428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23510126 (or 23510124 counting only the distinct ones).

The product of its digits is 4096, while the sum is 30.

The square root of 282121428 is about 16796.4707007157. The cubic root of 282121428 is about 655.8613286351.

The spelling of 282121428 in words is "two hundred eighty-two million, one hundred twenty-one thousand, four hundred twenty-eight".