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10188993 = 310931159
BaseRepresentation
bin100110110111…
…100011000001
3201011122200010
4212313203001
510102021433
61002215133
7152414343
oct46674301
921148603
1010188993
11582a161
1234b44a9
1321598b9
1414d3293
15d63e63
hex9b78c1

10188993 has 8 divisors (see below), whose sum is σ = 13710400. Its totient is φ = 6730128.

The previous prime is 10188991. The next prime is 10189031. The reversal of 10188993 is 39988101.

It is a happy number.

10188993 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10188993 - 21 = 10188991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10188991) 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, 15253 + ... + 15906.

It is an arithmetic number, because the mean of its divisors is an integer number (1713800).

Almost surely, 210188993 is an apocalyptic number.

It is an amenable number.

10188993 is a deficient number, since it is larger than the sum of its proper divisors (3521407).

10188993 is a wasteful number, since it uses less digits than its factorization.

10188993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31271.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 10188993 is about 3192.0202067030. The cubic root of 10188993 is about 216.7922509292.

It can be divided in two parts, 1018 and 8993, that added together give a triangular number (10011 = T141).

The spelling of 10188993 in words is "ten million, one hundred eighty-eight thousand, nine hundred ninety-three".

Divisors: 1 3 109 327 31159 93477 3396331 10188993