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10492391 = 713115301
BaseRepresentation
bin101000000001…
…100111100111
3201202001212002
4220001213213
510141224031
61012515515
7155120030
oct50014747
921661762
1010492391
115a170a8
12361bb9b
132234a20
141571a87
15dc3ccb
hexa019e7

10492391 has 8 divisors (see below), whose sum is σ = 12913824. Its totient is φ = 8301600.

The previous prime is 10492381. The next prime is 10492409. The reversal of 10492391 is 19329401.

It is a happy number.

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 10492391 - 214 = 10476007 is a prime.

It is a super-2 number, since 2×104923912 = 220180537793762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10492331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57560 + ... + 57741.

It is an arithmetic number, because the mean of its divisors is an integer number (1614228).

Almost surely, 210492391 is an apocalyptic number.

10492391 is a deficient number, since it is larger than the sum of its proper divisors (2421433).

10492391 is a wasteful number, since it uses less digits than its factorization.

10492391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115321.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 10492391 is about 3239.1960422302. The cubic root of 10492391 is about 218.9230493533.

The spelling of 10492391 in words is "ten million, four hundred ninety-two thousand, three hundred ninety-one".

Divisors: 1 7 13 91 115301 807107 1498913 10492391