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84020485 = 561833319
BaseRepresentation
bin1010000001000…
…00110100000101
312212002200102211
411000200310011
5133002123420
612200503421
72040106453
oct500406405
9185080384
1084020485
114347791a
122417ab71
131453a383
14b2319d3
157599e5a
hex5020d05

84020485 has 16 divisors (see below), whose sum is σ = 103743360. Its totient is φ = 65298240.

The previous prime is 84020483. The next prime is 84020491. The reversal of 84020485 is 58402048.

It is not a de Polignac number, because 84020485 - 21 = 84020483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84020483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23656 + ... + 26974.

It is an arithmetic number, because the mean of its divisors is an integer number (6483960).

Almost surely, 284020485 is an apocalyptic number.

It is an amenable number.

84020485 is a deficient number, since it is larger than the sum of its proper divisors (19722875).

84020485 is a wasteful number, since it uses less digits than its factorization.

84020485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3468.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 84020485 is about 9166.2688701565. The cubic root of 84020485 is about 437.9875120672.

The spelling of 84020485 in words is "eighty-four million, twenty thousand, four hundred eighty-five".

Divisors: 1 5 61 83 305 415 3319 5063 16595 25315 202459 275477 1012295 1377385 16804097 84020485