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487988238 = 2381331373
BaseRepresentation
bin11101000101100…
…001110000001110
31021000020101000110
4131011201300032
51444411110423
6120231140450
715043555143
oct3505416016
91230211013
10487988238
11230502871
12117514726
137a13a94a
1448b4a3ca
152cc94193
hex1d161c0e

487988238 has 8 divisors (see below), whose sum is σ = 975976488. Its totient is φ = 162662744.

The previous prime is 487988219. The next prime is 487988239. The reversal of 487988238 is 832889784.

It is a sphenic number, since it is the product of 3 distinct primes.

487988238 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487988239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40665681 + ... + 40665692.

It is an arithmetic number, because the mean of its divisors is an integer number (121997061).

Almost surely, 2487988238 is an apocalyptic number.

487988238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

487988238 is a wasteful number, since it uses less digits than its factorization.

487988238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81331378.

The product of its digits is 6193152, while the sum is 57.

The square root of 487988238 is about 22090.4558124091. The cubic root of 487988238 is about 787.2931112855.

The spelling of 487988238 in words is "four hundred eighty-seven million, nine hundred eighty-eight thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 81331373 162662746 243994119 487988238