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254490369 = 3721731227
BaseRepresentation
bin11110010101100…
…11011100000001
3122201212110011020
433022303130001
51010122142434
641130340053
76210063300
oct1712633401
9581773136
10254490369
11120720421
127128a629
1340955523
1425b28437
151751e849
hexf2b3701

254490369 has 12 divisors (see below), whose sum is σ = 394719984. Its totient is φ = 145422984.

The previous prime is 254490359. The next prime is 254490373. The reversal of 254490369 is 963094452.

254490369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 254490369 - 211 = 254488321 is a prime.

It is a super-2 number, since 2×2544903692 = 129530695827512322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 254490369.

It is not an unprimeable number, because it can be changed into a prime (254490319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 865467 + ... + 865760.

It is an arithmetic number, because the mean of its divisors is an integer number (32893332).

Almost surely, 2254490369 is an apocalyptic number.

It is an amenable number.

254490369 is a deficient number, since it is larger than the sum of its proper divisors (140229615).

254490369 is a wasteful number, since it uses less digits than its factorization.

254490369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731244 (or 1731237 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 254490369 is about 15952.7542762998. The cubic root of 254490369 is about 633.7098396253.

The spelling of 254490369 in words is "two hundred fifty-four million, four hundred ninety thousand, three hundred sixty-nine".

Divisors: 1 3 7 21 49 147 1731227 5193681 12118589 36355767 84830123 254490369