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10642897 = 58718131
BaseRepresentation
bin101000100110…
…010111010001
3202000201022101
4220212113101
510211033042
61020040401
7156314566
oct50462721
922021271
1010642897
11600a191
123693101
132288395
1415b086d
15e036b7
hexa265d1

10642897 has 4 divisors (see below), whose sum is σ = 10661616. Its totient is φ = 10624180.

The previous prime is 10642861. The next prime is 10642927. The reversal of 10642897 is 79824601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79824601 = 379210619.

It is a cyclic number.

It is not a de Polignac number, because 10642897 - 219 = 10118609 is a prime.

It is a super-2 number, since 2×106428972 = 226542513105218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10642097) 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 3 ways as a sum of consecutive naturals, for example, 8479 + ... + 9652.

It is an arithmetic number, because the mean of its divisors is an integer number (2665404).

Almost surely, 210642897 is an apocalyptic number.

It is an amenable number.

10642897 is a deficient number, since it is larger than the sum of its proper divisors (18719).

10642897 is an equidigital number, since it uses as much as digits as its factorization.

10642897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18718.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 10642897 is about 3262.3453220038. The cubic root of 10642897 is about 219.9648497561.

The spelling of 10642897 in words is "ten million, six hundred forty-two thousand, eight hundred ninety-seven".

Divisors: 1 587 18131 10642897