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12490322287 = 412591117577
BaseRepresentation
bin10111010000111101…
…10011000101101111
31012020110202010002011
423220132303011233
5201040010303122
65423222542051
7621343662532
oct135036630557
935213663064
1012490322287
11532a509003
122506b97927
13124090b961
14866bb4a19
154d1826377
hex2e87b316f

12490322287 has 8 divisors (see below), whose sum is σ = 12800011392. Its totient is φ = 12180873600.

The previous prime is 12490322269. The next prime is 12490322311. The reversal of 12490322287 is 78222309421.

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 a de Polignac number, because none of the positive numbers 2k-12490322287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12490322227) 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, 47443 + ... + 165019.

It is an arithmetic number, because the mean of its divisors is an integer number (1600001424).

Almost surely, 212490322287 is an apocalyptic number.

12490322287 is a deficient number, since it is larger than the sum of its proper divisors (309689105).

12490322287 is a wasteful number, since it uses less digits than its factorization.

12490322287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120209.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 12490322287 in words is "twelve billion, four hundred ninety million, three hundred twenty-two thousand, two hundred eighty-seven".

Divisors: 1 41 2591 106231 117577 4820657 304642007 12490322287