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5208987 = 371714591
BaseRepresentation
bin10011110111101110011011
3100210122101110
4103313232123
52313141422
6303351403
762163360
oct23675633
910718343
105208987
112a38653
1218b2563
131104c54
14998467
156cd60c
hex4f7b9b

5208987 has 16 divisors (see below), whose sum is σ = 8404992. Its totient is φ = 2801280.

The previous prime is 5208979. The next prime is 5208989. The reversal of 5208987 is 7898025.

It is not a de Polignac number, because 5208987 - 23 = 5208979 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5208989) 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, 6939 + ... + 7652.

It is an arithmetic number, because the mean of its divisors is an integer number (525312).

Almost surely, 25208987 is an apocalyptic number.

5208987 is a deficient number, since it is larger than the sum of its proper divisors (3196005).

5208987 is a wasteful number, since it uses less digits than its factorization.

5208987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14618.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 5208987 is about 2282.3205296364. The cubic root of 5208987 is about 173.3475699188.

The spelling of 5208987 in words is "five million, two hundred eight thousand, nine hundred eighty-seven".

Divisors: 1 3 7 17 21 51 119 357 14591 43773 102137 248047 306411 744141 1736329 5208987