1428030769 has 8 divisors (see below), whose sum is σ = 1558811808. Its totient is φ = 1297409760.

The previous prime is 1428030767. The next prime is 1428030827. The reversal of 1428030769 is 9670308241.

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 1428030769 - 2¹ = 1428030767 is a prime.

It is a super-2 number, since 2×1428030769² = 4078543754421462722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428030761) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20947 + ... + 57400.

It is an arithmetic number, because the mean of its divisors is an integer number (194851476).

Almost surely, 2^1428030769 is an apocalyptic number.

It is an amenable number.

1428030769 is a deficient number, since it is larger than the sum of its proper divisors (130781039).

1428030769 is a wasteful number, since it uses less digits than its factorization.

1428030769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80015.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1428030769 is about 37789.2943702314. The cubic root of 1428030769 is about 1126.1057819533.

The spelling of 1428030769 in words is "one billion, four hundred twenty-eight million, thirty thousand, seven hundred sixty-nine".