1428629 has 8 divisors (see below), whose sum is σ = 1592640. Its totient is φ = 1273536.

The previous prime is 1428613. The next prime is 1428631. The reversal of 1428629 is 9268241.

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 1428629 - 2⁴ = 1428613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1428595 and 1428604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1889 + ... + 2534.

It is an arithmetic number, because the mean of its divisors is an integer number (199080).

2^1428629 is an apocalyptic number.

1428629 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1428629 is a deficient number, since it is larger than the sum of its proper divisors (164011).

1428629 is a wasteful number, since it uses less digits than its factorization.

1428629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4459.

The product of its digits is 6912, while the sum is 32.

The square root of 1428629 is about 1195.2526929482. The cubic root of 1428629 is about 112.6263009504.

The spelling of 1428629 in words is "one million, four hundred twenty-eight thousand, six hundred twenty-nine".