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83127457 = 790713093
BaseRepresentation
bin1001111010001…
…10110010100001
312210102022102201
410331012302201
5132240034312
612125413201
72026400050
oct475066241
9183368381
1083127457
1142a17986
1223a0a201
13142b6a5a
14b07c397
157470557
hex4f46ca1

83127457 has 8 divisors (see below), whose sum is σ = 95114816. Its totient is φ = 71168112.

The previous prime is 83127449. The next prime is 83127481. The reversal of 83127457 is 75472138.

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 83127457 - 23 = 83127449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83127437) 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 7 ways as a sum of consecutive naturals, for example, 198 + ... + 12895.

It is an arithmetic number, because the mean of its divisors is an integer number (11889352).

Almost surely, 283127457 is an apocalyptic number.

It is an amenable number.

83127457 is a deficient number, since it is larger than the sum of its proper divisors (11987359).

83127457 is a wasteful number, since it uses less digits than its factorization.

83127457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14007.

The product of its digits is 47040, while the sum is 37.

The square root of 83127457 is about 9117.4260073773. The cubic root of 83127457 is about 436.4302366609.

The spelling of 83127457 in words is "eighty-three million, one hundred twenty-seven thousand, four hundred fifty-seven".

Divisors: 1 7 907 6349 13093 91651 11875351 83127457