424512828 has 72 divisors (see below), whose sum is σ = 1098691776. Its totient is φ = 138153600.

The previous prime is 424512787. The next prime is 424512841. The reversal of 424512828 is 828215424.

It is a super-2 number, since 2×424512828² = 360422282273115168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 424512792 and 424512801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 516658 + ... + 517478.

It is an arithmetic number, because the mean of its divisors is an integer number (15259608).

Almost surely, 2^424512828 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 424512828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (549345888).

424512828 is an abundant number, since it is smaller than the sum of its proper divisors (674178948).

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

424512828 is a wasteful number, since it uses less digits than its factorization.

424512828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155 (or 1150 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 424512828 is about 20603.7090835607. The cubic root of 424512828 is about 751.5599106557.

The spelling of 424512828 in words is "four hundred twenty-four million, five hundred twelve thousand, eight hundred twenty-eight".