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28601458731460 = 2251430072936573
BaseRepresentation
bin1101000000011010010111…
…10010011010100111000100
310202021021100211120012101101
412200031023302122213010
512222101241413401320
6140455155002105444
76011246544633436
oct640151362324704
9122237324505341
1028601458731460
1191278a08a735a
12325b1a27ab284
1312c614bb085b4
1470c4647c0656
15348ec9c60c0a
hex1a034bc9a9c4

28601458731460 has 12 divisors (see below), whose sum is σ = 60063063336108. Its totient is φ = 11440583492576.

The previous prime is 28601458731457. The next prime is 28601458731509. The reversal of 28601458731460 is 6413785410682.

It can be written as a sum of positive squares in 2 ways, for example, as 15036262586244 + 13565196145216 = 3877662^2 + 3683096^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715036468267 + ... + 715036468306.

It is an arithmetic number, because the mean of its divisors is an integer number (5005255278009).

Almost surely, 228601458731460 is an apocalyptic number.

28601458731460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28601458731460 is an abundant number, since it is smaller than the sum of its proper divisors (31461604604648).

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

28601458731460 is a wasteful number, since it uses less digits than its factorization.

28601458731460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430072936582 (or 1430072936580 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 28601458731460 in words is "twenty-eight trillion, six hundred one billion, four hundred fifty-eight million, seven hundred thirty-one thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 1430072936573 2860145873146 5720291746292 7150364682865 14300729365730 28601458731460