424684534428 has 288 divisors, whose sum is σ = 1365402275328. Its totient is φ = 108095731200.

The previous prime is 424684534423. The next prime is 424684534429. The reversal of 424684534428 is 824435486424.

424684534428 is a `hidden beast` number, since 4 + 2 + 4 + 6 + 84 + 534 + 4 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424684534423) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 46833951 + ... + 46843017.

Almost surely, 2^424684534428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 424684534428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (682701137664).

424684534428 is an abundant number, since it is smaller than the sum of its proper divisors (940717740900).

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

424684534428 is a wasteful number, since it uses less digits than its factorization.

424684534428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9433 (or 9428 counting only the distinct ones).

The product of its digits is 23592960, while the sum is 54.

The spelling of 424684534428 in words is "four hundred twenty-four billion, six hundred eighty-four million, five hundred thirty-four thousand, four hundred twenty-eight".