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290481 = 396827
BaseRepresentation
bin1000110111010110001
3112202110120
41012322301
533243411
610120453
72316612
oct1067261
9482416
10290481
11189274
12120129
13a22a9
1477c09
155b106
hex46eb1

290481 has 4 divisors (see below), whose sum is σ = 387312. Its totient is φ = 193652.

The previous prime is 290473. The next prime is 290489. The reversal of 290481 is 184092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (290473) and next prime (290489).

It is a cyclic number.

It is not a de Polignac number, because 290481 - 23 = 290473 is a prime.

It is a super-2 number, since 2×2904812 = 168758422722, which contains 22 as substring.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 290481.

It is not an unprimeable number, because it can be changed into a prime (290489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48411 + ... + 48416.

It is an arithmetic number, because the mean of its divisors is an integer number (96828).

2290481 is an apocalyptic number.

It is an amenable number.

290481 is a deficient number, since it is larger than the sum of its proper divisors (96831).

290481 is an equidigital number, since it uses as much as digits as its factorization.

290481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96830.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 290481 is about 538.9628929713. The cubic root of 290481 is about 66.2276345532.

The spelling of 290481 in words is "two hundred ninety thousand, four hundred eighty-one".

Divisors: 1 3 96827 290481