Search a number
-
+
1993085 = 51912087
BaseRepresentation
bin111100110100101111101
310202020222222
413212211331
51002234320
6110415125
722640513
oct7464575
93666888
101993085
111141486
128014a5
1354a253
1439c4b3
15295825
hex1e697d

1993085 has 8 divisors (see below), whose sum is σ = 2405376. Its totient is φ = 1585360.

The previous prime is 1993067. The next prime is 1993087. The reversal of 1993085 is 5803991.

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

It is not a de Polignac number, because 1993085 - 218 = 1730941 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993087) 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, 89 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (300672).

21993085 is an apocalyptic number.

It is an amenable number.

1993085 is a deficient number, since it is larger than the sum of its proper divisors (412291).

1993085 is a wasteful number, since it uses less digits than its factorization.

1993085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1993085 is about 1411.7666237732. The cubic root of 1993085 is about 125.8467314165.

The spelling of 1993085 in words is "one million, nine hundred ninety-three thousand, eighty-five".

Divisors: 1 5 191 955 2087 10435 398617 1993085