1428630 has 32 divisors (see below), whose sum is σ = 3919104. Its totient is φ = 326496.

The previous prime is 1428613. The next prime is 1428631. The reversal of 1428630 is 368241.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428631) 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 15 ways as a sum of consecutive naturals, for example, 3192 + ... + 3611.

It is an arithmetic number, because the mean of its divisors is an integer number (122472).

2^1428630 is an apocalyptic number.

1428630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1428630 is an abundant number, since it is smaller than the sum of its proper divisors (2490474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1428630 is a wasteful number, since it uses less digits than its factorization.

1428630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1428630 is about 1195.2531112697. The cubic root of 1428630 is about 112.6263272288.

The spelling of 1428630 in words is "one million, four hundred twenty-eight thousand, six hundred thirty".