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83071437 = 330790197
BaseRepresentation
bin1001111001110…
…01000111001101
312210022110120220
410330321013031
5132231241222
612124301553
72026044531
oct474710715
9183273526
1083071437
1142989889
12239a18b9
13142973c7
14b065bc1
15745db5c
hex4f391cd

83071437 has 8 divisors (see below), whose sum is σ = 111123936. Its totient is φ = 55199952.

The previous prime is 83071427. The next prime is 83071441. The reversal of 83071437 is 73417038.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83071437 - 24 = 83071421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83071398 and 83071407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83071427) 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, 44178 + ... + 46019.

It is an arithmetic number, because the mean of its divisors is an integer number (13890492).

Almost surely, 283071437 is an apocalyptic number.

It is an amenable number.

83071437 is a deficient number, since it is larger than the sum of its proper divisors (28052499).

83071437 is a wasteful number, since it uses less digits than its factorization.

83071437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90507.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 83071437 is about 9114.3533506223. The cubic root of 83071437 is about 436.3321771394.

The spelling of 83071437 in words is "eighty-three million, seventy-one thousand, four hundred thirty-seven".

Divisors: 1 3 307 921 90197 270591 27690479 83071437