1428551424 has 288 divisors, whose sum is σ = 4473907200. Its totient is φ = 449003520.

The previous prime is 1428551407. The next prime is 1428551441. The reversal of 1428551424 is 4241558241.

1428551424 is a `hidden beast` number, since 1 + 42 + 85 + 514 + 24 = 666.

It is an interprime number because it is at equal distance from previous prime (1428551407) and next prime (1428551441).

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12641992 + ... + 12642104.

It is an arithmetic number, because the mean of its divisors is an integer number (15534400).

Almost surely, 2^1428551424 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 1428551424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2236953600).

1428551424 is an abundant number, since it is smaller than the sum of its proper divisors (3045355776).

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

1428551424 is a wasteful number, since it uses less digits than its factorization.

1428551424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 208 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

The square root of 1428551424 is about 37796.1826643909. The cubic root of 1428551424 is about 1126.2426233943.

The spelling of 1428551424 in words is "one billion, four hundred twenty-eight million, five hundred fifty-one thousand, four hundred twenty-four".