Search a number
-
+
487984531938 = 23117836902381
BaseRepresentation
bin1110001100111100010…
…01010000100111100010
31201122120110222200200220
413012132021100213202
530443343020010223
61012102122023510
750153466040251
oct7063611204742
91648513880626
10487984531938
11178a53601502
127a6a9047b96
133702aa2b867
141989353a798
15ca60d596e3
hex719e2509e2

487984531938 has 16 divisors (see below), whose sum is σ = 976052033856. Its totient is φ = 162647682320.

The previous prime is 487984531927. The next prime is 487984531949. The reversal of 487984531938 is 839135489784.

It is an interprime number because it is at equal distance from previous prime (487984531927) and next prime (487984531949).

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, 3380493 + ... + 3521888.

It is an arithmetic number, because the mean of its divisors is an integer number (61003252116).

Almost surely, 2487984531938 is an apocalyptic number.

487984531938 is an abundant number, since it is smaller than the sum of its proper divisors (488067501918).

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

487984531938 is a wasteful number, since it uses less digits than its factorization.

487984531938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6914169.

The product of its digits is 209018880, while the sum is 69.

The spelling of 487984531938 in words is "four hundred eighty-seven billion, nine hundred eighty-four million, five hundred thirty-one thousand, nine hundred thirty-eight".

Divisors: 1 2 3 6 11783 23566 35349 70698 6902381 13804762 20707143 41414286 81330755323 162661510646 243992265969 487984531938