1428698 has 4 divisors (see below), whose sum is σ = 2143050. Its totient is φ = 714348.

The previous prime is 1428689. The next prime is 1428703. The reversal of 1428698 is 8968241.

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

It can be written as a sum of positive squares in only one way, i.e., 744769 + 683929 = 863^2 + 827^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357173 + ... + 357176.

2^1428698 is an apocalyptic number.

1428698 is a deficient number, since it is larger than the sum of its proper divisors (714352).

1428698 is an equidigital number, since it uses as much as digits as its factorization.

1428698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714351.

The product of its digits is 27648, while the sum is 38.

The square root of 1428698 is about 1195.2815567890. The cubic root of 1428698 is about 112.6281141315.

The spelling of 1428698 in words is "one million, four hundred twenty-eight thousand, six hundred ninety-eight".