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1406 = 21937
BaseRepresentation
bin10101111110
31221002
4111332
521111
610302
74046
oct2576
91832
101406
111069
12992
13842
14726
1563b
hex57e

1406 has 8 divisors (see below), whose sum is σ = 2280. Its totient is φ = 648.

The previous prime is 1399. The next prime is 1409. The reversal of 1406 is 6041.

Adding to 1406 its reverse (6041), we get a palindrome (7447).

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

It is an Ulam number.

It is a plaindrome in base 16.

It is a nialpdrome in base 5, base 12 and base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409) by changing a digit.

1406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20 + ... + 56.

It is an arithmetic number, because the mean of its divisors is an integer number (285).

It is a pronic number, being equal to 37×38.

1406 is a deficient number, since it is larger than the sum of its proper divisors (874).

1406 is a wasteful number, since it uses less digits than its factorization.

1406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1406 is about 37.4966665185. The cubic root of 1406 is about 11.2028479152.

The spelling of 1406 in words is "one thousand, four hundred six".

Divisors: 1 2 19 37 38 74 703 1406