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481481 = 71113237
BaseRepresentation
bin1110101100011001001
3220110110122
41311203021
5110401411
614153025
74043510
oct1654311
9813418
10481481
112a9820
121b2775
1313b200
14c7677
15979db
hex758c9

481481 has 24 divisors (see below), whose sum is σ = 667584. Its totient is φ = 336960.

The previous prime is 481469. The next prime is 481489. The reversal of 481481 is 184184.

It is not a de Polignac number, because 481481 - 26 = 481417 is a prime.

It is a super-2 number, since 2×4814812 = 463647906722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 481481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12995 + ... + 13031.

It is an arithmetic number, because the mean of its divisors is an integer number (27816).

2481481 is an apocalyptic number.

It is an amenable number.

481481 is a deficient number, since it is larger than the sum of its proper divisors (186103).

481481 is a wasteful number, since it uses less digits than its factorization.

481481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 68 counting only the distinct ones).

The product of its digits is 1024, while the sum is 26.

The square root of 481481 is about 693.8883195443. Note that the first 3 decimals coincide. The cubic root of 481481 is about 78.3777967981.

The spelling of 481481 in words is "four hundred eighty-one thousand, four hundred eighty-one".

Divisors: 1 7 11 13 37 77 91 143 169 259 407 481 1001 1183 1859 2849 3367 5291 6253 13013 37037 43771 68783 481481