1427998 has 16 divisors (see below), whose sum is σ = 2516976. Its totient is φ = 599040.

The previous prime is 1427969. The next prime is 1427999. The reversal of 1427998 is 8997241.

It is a self number, because there is not a number n which added to its sum of digits gives 1427998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427999) 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, 2211 + ... + 2782.

It is an arithmetic number, because the mean of its divisors is an integer number (157311).

2^1427998 is an apocalyptic number.

1427998 is a deficient number, since it is larger than the sum of its proper divisors (1088978).

1427998 is a wasteful number, since it uses less digits than its factorization.

1427998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5019.

The product of its digits is 36288, while the sum is 40.

The square root of 1427998 is about 1194.9887028755. The cubic root of 1427998 is about 112.6097168310.

The spelling of 1427998 in words is "one million, four hundred twenty-seven thousand, nine hundred ninety-eight".