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5218047 = 33193261
BaseRepresentation
bin10011111001111011111111
3100211002211000
4103321323333
52313434142
6303501343
762231652
oct23717377
910732730
105218047
112a4443a
1218b7853
131109103
1499b899
156d114c
hex4f9eff

5218047 has 8 divisors (see below), whose sum is σ = 7730480. Its totient is φ = 3478680.

The previous prime is 5218021. The next prime is 5218051. The reversal of 5218047 is 7408125.

It is not a de Polignac number, because 5218047 - 211 = 5215999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 193261 = 5218047 / (5 + 2 + 1 + 8 + 0 + 4 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5218047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5218067) 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, 96604 + ... + 96657.

It is an arithmetic number, because the mean of its divisors is an integer number (966310).

Almost surely, 25218047 is an apocalyptic number.

5218047 is a deficient number, since it is larger than the sum of its proper divisors (2512433).

5218047 is a wasteful number, since it uses less digits than its factorization.

5218047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193270 (or 193264 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 5218047 is about 2284.3044893359. The cubic root of 5218047 is about 173.4480129493.

The spelling of 5218047 in words is "five million, two hundred eighteen thousand, forty-seven".

Divisors: 1 3 9 27 193261 579783 1739349 5218047