1428787133 has 8 divisors (see below), whose sum is σ = 1437217536. Its totient is φ = 1420372800.

The previous prime is 1428787097. The next prime is 1428787141. The reversal of 1428787133 is 3317878241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1428787133 - 2¹⁶ = 1428721597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428787433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205685 + ... + 212517.

It is an arithmetic number, because the mean of its divisors is an integer number (179652192).

Almost surely, 2^1428787133 is an apocalyptic number.

It is an amenable number.

1428787133 is a deficient number, since it is larger than the sum of its proper divisors (8430403).

1428787133 is an equidigital number, since it uses as much as digits as its factorization.

1428787133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8035.

The product of its digits is 225792, while the sum is 44.

The square root of 1428787133 is about 37799.3006945896. The cubic root of 1428787133 is about 1126.3045628104.

The spelling of 1428787133 in words is "one billion, four hundred twenty-eight million, seven hundred eighty-seven thousand, one hundred thirty-three".