1028214427 has 4 divisors (see below), whose sum is σ = 1028294136. Its totient is φ = 1028134720.

The previous prime is 1028214391. The next prime is 1028214437. The reversal of 1028214427 is 7244128201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7244128201 = 61967 ⋅116903.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028214427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028214437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15574 + ... + 47947.

It is an arithmetic number, because the mean of its divisors is an integer number (257073534).

Almost surely, 2^1028214427 is an apocalyptic number.

1028214427 is a deficient number, since it is larger than the sum of its proper divisors (79709).

1028214427 is an equidigital number, since it uses as much as digits as its factorization.

1028214427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79708.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 1028214427 is about 32065.7828065993. The cubic root of 1028214427 is about 1009.3177194498.

The spelling of 1028214427 in words is "one billion, twenty-eight million, two hundred fourteen thousand, four hundred twenty-seven".