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126869983 = 2933113217
BaseRepresentation
bin1111000111111…
…10000111011111
322211201122220021
413203332013133
5224434314413
620331133011
73100243222
oct743760737
9284648807
10126869983
1165684329
12365a4167
1320390bc6
1412bc75b9
15b21118d
hex78fe1df

126869983 has 8 divisors (see below), whose sum is σ = 131651280. Its totient is φ = 122115840.

The previous prime is 126869957. The next prime is 126869987. The reversal of 126869983 is 389968621.

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 126869983 - 221 = 124772831 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 126869983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126869987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2991 + ... + 16207.

It is an arithmetic number, because the mean of its divisors is an integer number (16456410).

Almost surely, 2126869983 is an apocalyptic number.

126869983 is a deficient number, since it is larger than the sum of its proper divisors (4781297).

126869983 is a wasteful number, since it uses less digits than its factorization.

126869983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13577.

The product of its digits is 1119744, while the sum is 52.

The square root of 126869983 is about 11263.6576208619. The cubic root of 126869983 is about 502.4809797839.

The spelling of 126869983 in words is "one hundred twenty-six million, eight hundred sixty-nine thousand, nine hundred eighty-three".

Divisors: 1 29 331 9599 13217 383293 4374827 126869983