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10230491 = 43323627
BaseRepresentation
bin100111000001…
…101011011011
3201020202121002
4213001223123
510104333431
61003135215
7152646335
oct47015333
921222532
1010230491
115858357
12351450b
13217275b
141504455
15d713cb
hex9c1adb

10230491 has 4 divisors (see below), whose sum is σ = 10254552. Its totient is φ = 10206432.

The previous prime is 10230487. The next prime is 10230499. The reversal of 10230491 is 19403201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19403201 = 97200033.

It is a cyclic number.

It is not a de Polignac number, because 10230491 - 22 = 10230487 is a prime.

It is a super-2 number, since 2×102304912 = 209325892202162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10230499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11381 + ... + 12246.

It is an arithmetic number, because the mean of its divisors is an integer number (2563638).

Almost surely, 210230491 is an apocalyptic number.

10230491 is a deficient number, since it is larger than the sum of its proper divisors (24061).

10230491 is an equidigital number, since it uses as much as digits as its factorization.

10230491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24060.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 10230491 is about 3198.5138736607. The cubic root of 10230491 is about 217.0861713306.

Adding to 10230491 its reverse (19403201), we get a palindrome (29633692).

The spelling of 10230491 in words is "ten million, two hundred thirty thousand, four hundred ninety-one".

Divisors: 1 433 23627 10230491