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69284493 = 327698277
BaseRepresentation
bin1000010000100…
…11001010001101
311211101000110100
410020103022031
5120214100433
610513001313
71500623415
oct410231215
9154330410
1069284493
1136122513
121b253239
131147ac55
1492b7645
156138b13
hex421328d

69284493 has 6 divisors (see below), whose sum is σ = 100077614. Its totient is φ = 46189656.

The previous prime is 69284477. The next prime is 69284513. The reversal of 69284493 is 39448296.

It can be written as a sum of positive squares in only one way, i.e., 46416969 + 22867524 = 6813^2 + 4782^2 .

It is not a de Polignac number, because 69284493 - 24 = 69284477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69284693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3849130 + ... + 3849147.

Almost surely, 269284493 is an apocalyptic number.

It is an amenable number.

69284493 is a deficient number, since it is larger than the sum of its proper divisors (30793121).

69284493 is a wasteful number, since it uses less digits than its factorization.

69284493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7698283 (or 7698280 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 69284493 is about 8323.7307140488. The cubic root of 69284493 is about 410.7195237730.

The spelling of 69284493 in words is "sixty-nine million, two hundred eighty-four thousand, four hundred ninety-three".

Divisors: 1 3 9 7698277 23094831 69284493