1428035069 has 4 divisors (see below), whose sum is σ = 1434271260. Its totient is φ = 1421798880.

The previous prime is 1428035039. The next prime is 1428035083. The reversal of 1428035069 is 9605308241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1228152025 + 199883044 = 35045^2 + 14138^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428035069 - 2¹² = 1428030973 is a prime.

It is a super-2 number, since 2×1428035069² = 4078568316587669522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428035009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3117752 + ... + 3118209.

It is an arithmetic number, because the mean of its divisors is an integer number (358567815).

Almost surely, 2^1428035069 is an apocalyptic number.

It is an amenable number.

1428035069 is a deficient number, since it is larger than the sum of its proper divisors (6236191).

1428035069 is an equidigital number, since it uses as much as digits as its factorization.

1428035069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6236190.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1428035069 is about 37789.3512646089. The cubic root of 1428035069 is about 1126.1069122394.

The spelling of 1428035069 in words is "one billion, four hundred twenty-eight million, thirty-five thousand, sixty-nine".