1428556500 has 240 divisors, whose sum is σ = 5327562240. Its totient is φ = 326462400.

The previous prime is 1428556483. The next prime is 1428556517. The reversal of 1428556500 is 56558241.

1428556500 is a `hidden beast` number, since 14 + 2 + 85 + 565 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1428556483) and next prime (1428556517).

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 280981 + ... + 286019.

It is an arithmetic number, because the mean of its divisors is an integer number (22198176).

Almost surely, 2^1428556500 is an apocalyptic number.

1428556500 is a gapful number since it is divisible by the number (10) 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 1428556500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2663781120).

1428556500 is an abundant number, since it is smaller than the sum of its proper divisors (3899005740).

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

1428556500 is a wasteful number, since it uses less digits than its factorization.

1428556500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077 (or 5056 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 1428556500 is about 37796.2498139696. The cubic root of 1428556500 is about 1126.2439573332.

The spelling of 1428556500 in words is "one billion, four hundred twenty-eight million, five hundred fifty-six thousand, five hundred".