Search a number
-
+
487039481 = 3171221281
BaseRepresentation
bin11101000001111…
…010000111111001
31020221110011120022
4131001322013321
51444140230411
6120154540225
715032524115
oct3501720771
91227404508
10487039481
1122aa14a75
12117137675
1379b97b56
1448980745
152cb57edb
hex1d07a1f9

487039481 has 8 divisors (see below), whose sum is σ = 509833728. Its totient is φ = 464688000.

The previous prime is 487039463. The next prime is 487039493. The reversal of 487039481 is 184930784.

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

It is a cyclic number.

It is not a de Polignac number, because 487039481 - 222 = 482845177 is a prime.

It is a super-2 number, since 2×4870394812 = 474414912105498722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487039781) 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, 108440 + ... + 112841.

It is an arithmetic number, because the mean of its divisors is an integer number (63729216).

Almost surely, 2487039481 is an apocalyptic number.

It is an amenable number.

487039481 is a deficient number, since it is larger than the sum of its proper divisors (22794247).

487039481 is a wasteful number, since it uses less digits than its factorization.

487039481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221383.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 487039481 is about 22068.9710000263. The cubic root of 487039481 is about 786.7825563211.

The spelling of 487039481 in words is "four hundred eighty-seven million, thirty-nine thousand, four hundred eighty-one".

Divisors: 1 31 71 2201 221281 6859711 15710951 487039481