1427988 has 24 divisors (see below), whose sum is σ = 3361792. Its totient is φ = 471744.

The previous prime is 1427969. The next prime is 1427999. The reversal of 1427988 is 8897241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056 + ... + 1992.

2^1427988 is an apocalyptic number.

It is an amenable number.

1427988 is an abundant number, since it is smaller than the sum of its proper divisors (1933804).

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

1427988 is a wasteful number, since it uses less digits than its factorization.

1427988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071 (or 1069 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 1427988 is about 1194.9845187282. The cubic root of 1427988 is about 112.6094539689.

It can be divided in two parts, 1427 and 988, that added together give a triangular number (2415 = T₆₉).

The spelling of 1427988 in words is "one million, four hundred twenty-seven thousand, nine hundred eighty-eight".