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228054869 = 7329101227
BaseRepresentation
bin11011001011111…
…01011101010101
3120220010101110122
431211331131111
5431340223434
634344001325
75436302000
oct1545753525
9526111418
10228054869
11107804aa9
1264460245
133832ab13
1422406537
151504bc2e
hexd97d755

228054869 has 32 divisors (see below), whose sum is σ = 279072000. Its totient is φ = 186043200.

The previous prime is 228054863. The next prime is 228054877. The reversal of 228054869 is 968450822.

It is not a de Polignac number, because 228054869 - 224 = 211277653 is a prime.

It is a super-2 number, since 2×2280548692 = 104018046549214322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228054863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1004534 + ... + 1004760.

It is an arithmetic number, because the mean of its divisors is an integer number (8721000).

Almost surely, 2228054869 is an apocalyptic number.

228054869 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

228054869 is a deficient number, since it is larger than the sum of its proper divisors (51017131).

228054869 is a wasteful number, since it uses less digits than its factorization.

228054869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 228054869 is about 15101.4856553917. The cubic root of 228054869 is about 610.9604764950.

The spelling of 228054869 in words is "two hundred twenty-eight million, fifty-four thousand, eight hundred sixty-nine".

Divisors: 1 7 29 49 101 203 227 343 707 1421 1589 2929 4949 6583 9947 11123 20503 22927 34643 46081 77861 143521 160489 322567 664883 1004647 1123423 2257969 4654181 7863961 32579267 228054869