Search a number
-
+
1427987 = 11433019
BaseRepresentation
bin101011100101000010011
32200112211102
411130220103
5331143422
650335015
715065141
oct5345023
92615742
101427987
11895960
1258a46b
133acc82
14292591
151d3192
hex15ca13

1427987 has 8 divisors (see below), whose sum is σ = 1594560. Its totient is φ = 1267560.

The previous prime is 1427969. The next prime is 1427999. The reversal of 1427987 is 7897241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1427987 - 214 = 1411603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1427987.

It is not an unprimeable number, because it can be changed into a prime (1427917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037 + ... + 1982.

It is an arithmetic number, because the mean of its divisors is an integer number (199320).

21427987 is an apocalyptic number.

1427987 is a deficient number, since it is larger than the sum of its proper divisors (166573).

1427987 is a wasteful number, since it uses less digits than its factorization.

1427987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073.

The product of its digits is 28224, while the sum is 38.

The square root of 1427987 is about 1194.9841003126. The cubic root of 1427987 is about 112.6094276826.

Adding to 1427987 its sum of digits (38), we get a square (1428025 = 11952).

The spelling of 1427987 in words is "one million, four hundred twenty-seven thousand, nine hundred eighty-seven".

Divisors: 1 11 43 473 3019 33209 129817 1427987