1428717528 has 224 divisors, whose sum is σ = 4658803200. Its totient is φ = 402128064.

The previous prime is 1428717487. The next prime is 1428717541. The reversal of 1428717528 is 8257178241.

1428717528 is a `hidden beast` number, since 1 + 42 + 87 + 1 + 7 + 528 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3224875 + ... + 3225317.

Almost surely, 2^1428717528 is an apocalyptic number.

1428717528 is a gapful number since it is divisible by the number (18) 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 1428717528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2329401600).

1428717528 is an abundant number, since it is smaller than the sum of its proper divisors (3230085672).

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

1428717528 is an equidigital number, since it uses as much as digits as its factorization.

1428717528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 534 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 1428717528 is about 37798.3799652842. The cubic root of 1428717528 is about 1126.2862727749.

The spelling of 1428717528 in words is "one billion, four hundred twenty-eight million, seven hundred seventeen thousand, five hundred twenty-eight".