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290467489 = 1331720763
BaseRepresentation
bin10001010100000…
…010111010100001
3202020120021111011
4101110002322201
51043324424424
644453420521
710124634664
oct2124027241
9666507434
10290467489
11139a63584
128133a741
1348240c70
142a8116db
151a779694
hex11502ea1

290467489 has 8 divisors (see below), whose sum is σ = 322902272. Its totient is φ = 259474320.

The previous prime is 290467487. The next prime is 290467523. The reversal of 290467489 is 984764092.

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 290467489 - 21 = 290467487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290467481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359979 + ... + 360784.

It is an arithmetic number, because the mean of its divisors is an integer number (40362784).

Almost surely, 2290467489 is an apocalyptic number.

It is an amenable number.

290467489 is a deficient number, since it is larger than the sum of its proper divisors (32434783).

290467489 is a wasteful number, since it uses less digits than its factorization.

290467489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720807.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 290467489 is about 17043.1067883763. The cubic root of 290467489 is about 662.2660773283.

The spelling of 290467489 in words is "two hundred ninety million, four hundred sixty-seven thousand, four hundred eighty-nine".

Divisors: 1 13 31 403 720763 9369919 22343653 290467489