1428893568 has 256 divisors, whose sum is σ = 4461480000. Its totient is φ = 449519616.

The previous prime is 1428893563. The next prime is 1428893573. The reversal of 1428893568 is 8653988241.

1428893568 is a `hidden beast` number, since 1 + 4 + 288 + 9 + 356 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1428893563) and next prime (1428893573).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428893563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5311738 + ... + 5312006.

Almost surely, 2^1428893568 is an apocalyptic number.

1428893568 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 1428893568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2230740000).

1428893568 is an abundant number, since it is smaller than the sum of its proper divisors (3032586432).

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

1428893568 is a wasteful number, since it uses less digits than its factorization.

1428893568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 356 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 1428893568 is about 37800.7085647875. The cubic root of 1428893568 is about 1126.3325294792.

The spelling of 1428893568 in words is "one billion, four hundred twenty-eight million, eight hundred ninety-three thousand, five hundred sixty-eight".