1428009198 has 64 divisors (see below), whose sum is σ = 3565486080. Its totient is φ = 370418400.

The previous prime is 1428009173. The next prime is 1428009199. The reversal of 1428009198 is 8919008241.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428009199) 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 31 ways as a sum of consecutive naturals, for example, 456283 + ... + 459401.

It is an arithmetic number, because the mean of its divisors is an integer number (55710720).

Almost surely, 2^1428009198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1428009198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782743040).

1428009198 is an abundant number, since it is smaller than the sum of its proper divisors (2137476882).

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

1428009198 is a wasteful number, since it uses less digits than its factorization.

1428009198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 1428009198 is about 37789.0089576321. The cubic root of 1428009198 is about 1126.1001118257.

The spelling of 1428009198 in words is "one billion, four hundred twenty-eight million, nine thousand, one hundred ninety-eight".