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10191379 = 11926489
BaseRepresentation
bin100110111000…
…001000010011
3201011202221111
4212320020103
510102111004
61002234151
7152424322
oct46701023
921152844
1010191379
115830a30
1234b5957
13215aa03
1414d40b9
15d64a04
hex9b8213

10191379 has 4 divisors (see below), whose sum is σ = 11117880. Its totient is φ = 9264880.

The previous prime is 10191373. The next prime is 10191397. The reversal of 10191379 is 97319101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10191379 - 29 = 10190867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10191379.

It is not an unprimeable number, because it can be changed into a prime (10191373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463234 + ... + 463255.

It is an arithmetic number, because the mean of its divisors is an integer number (2779470).

Almost surely, 210191379 is an apocalyptic number.

10191379 is a deficient number, since it is larger than the sum of its proper divisors (926501).

10191379 is an equidigital number, since it uses as much as digits as its factorization.

10191379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926500.

The product of its (nonzero) digits is 1701, while the sum is 31.

The square root of 10191379 is about 3192.3939293264. The cubic root of 10191379 is about 216.8091719975.

The spelling of 10191379 in words is "ten million, one hundred ninety-one thousand, three hundred seventy-nine".

Divisors: 1 11 926489 10191379