428403612 has 192 divisors, whose sum is σ = 1321334784. Its totient is φ = 104924160.

The previous prime is 428403581. The next prime is 428403623. The reversal of 428403612 is 216304824.

It is a self number, because there is not a number n which added to its sum of digits gives 428403612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 929062 + ... + 929522.

It is an arithmetic number, because the mean of its divisors is an integer number (6881952).

Almost surely, 2^428403612 is an apocalyptic number.

428403612 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428403612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660667392).

428403612 is an abundant number, since it is smaller than the sum of its proper divisors (892931172).

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

428403612 is a wasteful number, since it uses less digits than its factorization.

428403612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 428403612 is about 20697.9132281494. The cubic root of 428403612 is about 753.8490200459.

The spelling of 428403612 in words is "four hundred twenty-eight million, four hundred three thousand, six hundred twelve".