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5218490 = 251730697
BaseRepresentation
bin10011111010000010111010
3100211010102102
4103322002322
52313442430
6303503402
762233154
oct23720272
910733372
105218490
112a44802
1218b7b62
131109384
1499bad4
156d1345
hex4fa0ba

5218490 has 16 divisors (see below), whose sum is σ = 9946152. Its totient is φ = 1964544.

The previous prime is 5218487. The next prime is 5218511. The reversal of 5218490 is 948125.

It can be written as a sum of positive squares in 4 ways, for example, as 3751969 + 1466521 = 1937^2 + 1211^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15179 + ... + 15518.

Almost surely, 25218490 is an apocalyptic number.

5218490 is a deficient number, since it is larger than the sum of its proper divisors (4727662).

5218490 is a wasteful number, since it uses less digits than its factorization.

5218490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30721.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 5218490 is about 2284.4014533352. The cubic root of 5218490 is about 173.4529212541.

The spelling of 5218490 in words is "five million, two hundred eighteen thousand, four hundred ninety".

Divisors: 1 2 5 10 17 34 85 170 30697 61394 153485 306970 521849 1043698 2609245 5218490