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28715750614461 = 3181367862716703
BaseRepresentation
bin1101000011101111010000…
…00111010110010110111101
310202200012101000220102102010
412201313220013112112331
512230434324124130321
6141023500025521433
76022434032622351
oct641675007262675
9122605330812363
1028715750614461
119171310670709
12327937a943279
131303b64542231
14713bc79b7461
1534be68a37676
hex1a1de81d65bd

28715750614461 has 32 divisors (see below), whose sum is σ = 38610890293248. Its totient is φ = 18982854515520.

The previous prime is 28715750614361. The next prime is 28715750614471. The reversal of 28715750614461 is 16441605751782.

It is not a de Polignac number, because 28715750614461 - 229 = 28715213743549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28715750614471) 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, 1719188836 + ... + 1719205538.

It is an arithmetic number, because the mean of its divisors is an integer number (1206590321664).

Almost surely, 228715750614461 is an apocalyptic number.

It is an amenable number.

28715750614461 is a deficient number, since it is larger than the sum of its proper divisors (9895139678787).

28715750614461 is a wasteful number, since it uses less digits than its factorization.

28715750614461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25881.

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 28715750614461 in words is "twenty-eight trillion, seven hundred fifteen billion, seven hundred fifty million, six hundred fourteen thousand, four hundred sixty-one".

Divisors: 1 3 181 367 543 1101 8627 16703 25881 50109 66427 199281 1561487 3023243 3166109 4684461 6130001 9069729 9498327 18390003 144096781 432290343 573065729 1109530181 1719197187 3328590543 26081517361 52883518627 78244552083 158650555881 9571916871487 28715750614461