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28122151889041 = 716927237339769
BaseRepresentation
bin1100110010011101100101…
…10111111010100010010001
310200120110012010011210211121
412121032302313322202101
512141223131340422131
6135451045505042241
75631521065663420
oct631166267724221
9120513163153747
1028122151889041
118a625a0664491
1231a2317926381
13128cba4b4a282
146d31959592b7
1533b7c5b68911
hex1993b2dfa891

28122151889041 has 8 divisors (see below), whose sum is σ = 32141501012480. Its totient is φ = 24103277479008.

The previous prime is 28122151888979. The next prime is 28122151889087. The reversal of 28122151889041 is 14098815122182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-28122151889041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28122151889041.

It is not an unprimeable number, because it can be changed into a prime (28122151889341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118551396 + ... + 118788373.

It is an arithmetic number, because the mean of its divisors is an integer number (4017687626560).

Almost surely, 228122151889041 is an apocalyptic number.

It is an amenable number.

28122151889041 is a deficient number, since it is larger than the sum of its proper divisors (4019349123439).

28122151889041 is a wasteful number, since it uses less digits than its factorization.

28122151889041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237356703.

The product of its (nonzero) digits is 737280, while the sum is 52.

The spelling of 28122151889041 in words is "twenty-eight trillion, one hundred twenty-two billion, one hundred fifty-one million, eight hundred eighty-nine thousand, forty-one".

Divisors: 1 7 16927 118489 237339769 1661378383 4017450269863 28122151889041