1428026587 has 8 divisors (see below), whose sum is σ = 1545605600. Its totient is φ = 1311552000.

The previous prime is 1428026573. The next prime is 1428026609. The reversal of 1428026587 is 7856208241.

It is a happy number.

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 1428026587 - 2⁷ = 1428026459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428026987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273414 + ... + 278587.

It is an arithmetic number, because the mean of its divisors is an integer number (193200700).

Almost surely, 2^1428026587 is an apocalyptic number.

1428026587 is a deficient number, since it is larger than the sum of its proper divisors (117579013).

1428026587 is a wasteful number, since it uses less digits than its factorization.

1428026587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552213.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 1428026587 is about 37789.2390370592. The cubic root of 1428026587 is about 1126.1046826822.

The spelling of 1428026587 in words is "one billion, four hundred twenty-eight million, twenty-six thousand, five hundred eighty-seven".