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28554090492 = 22319125237239
BaseRepresentation
bin11010100101111101…
…001101011111111100
32201200222120002102010
4122211331031133330
5431434321343432
621041221131220
72030411523144
oct324575153774
981628502363
1028554090492
11111230488a4
12564a859b10
132900961045
14154c3c5924
15b21c163cc
hex6a5f4d7fc

28554090492 has 24 divisors (see below), whose sum is σ = 70132854400. Its totient is φ = 9017081136.

The previous prime is 28554090491. The next prime is 28554090529. The reversal of 28554090492 is 29409045582.

It is a super-3 number, since 3×285540904923 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28554090491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62618392 + ... + 62618847.

Almost surely, 228554090492 is an apocalyptic number.

It is an amenable number.

28554090492 is an abundant number, since it is smaller than the sum of its proper divisors (41578763908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28554090492 is a wasteful number, since it uses less digits than its factorization.

28554090492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125237265 (or 125237263 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 28554090492 in words is "twenty-eight billion, five hundred fifty-four million, ninety thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 125237239 250474478 375711717 500948956 751423434 1502846868 2379507541 4759015082 7138522623 9518030164 14277045246 28554090492