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83028291 = 336237639
BaseRepresentation
bin1001111001011…
…10100101000011
312210020021101220
410330232211003
5132223401131
612123330123
72025504663
oct474564503
9183207356
1083028291
114295a425
1223980943
1314280888
14b0541a3
157450e96
hex4f2e943

83028291 has 8 divisors (see below), whose sum is σ = 110749440. Its totient is φ = 55329672.

The previous prime is 83028251. The next prime is 83028293. The reversal of 83028291 is 19282038.

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

It is not a de Polignac number, because 83028291 - 210 = 83027267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83028293) 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, 7050 + ... + 14688.

It is an arithmetic number, because the mean of its divisors is an integer number (13843680).

Almost surely, 283028291 is an apocalyptic number.

83028291 is a deficient number, since it is larger than the sum of its proper divisors (27721149).

83028291 is a wasteful number, since it uses less digits than its factorization.

83028291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11265.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 83028291 is about 9111.9861171975. The cubic root of 83028291 is about 436.2566226968.

The spelling of 83028291 in words is "eighty-three million, twenty-eight thousand, two hundred ninety-one".

Divisors: 1 3 3623 7639 10869 22917 27676097 83028291