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28424079915 = 35711157156749
BaseRepresentation
bin11010011110001101…
…010000101000101011
32201100220220212102120
4122132031100220223
5431203031024130
621020254402323
72024242456440
oct323615205053
981326825376
1028424079915
1111066719a40
1256132003a3
1328aca407ca
1415390219c7
15b155d4910
hex69e350a2b

28424079915 has 64 divisors (see below), whose sum is σ = 57062016000. Its totient is φ = 11737290240.

The previous prime is 28424079907. The next prime is 28424079967. The reversal of 28424079915 is 51997042482.

It is not a de Polignac number, because 28424079915 - 23 = 28424079907 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 102961 + ... + 259709.

It is an arithmetic number, because the mean of its divisors is an integer number (891594000).

Almost surely, 228424079915 is an apocalyptic number.

28424079915 is an abundant number, since it is smaller than the sum of its proper divisors (28637936085).

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

28424079915 is a wasteful number, since it uses less digits than its factorization.

28424079915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156932.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 28424079915 in words is "twenty-eight billion, four hundred twenty-four million, seventy-nine thousand, nine hundred fifteen".

Divisors: 1 3 5 7 11 15 21 33 35 55 77 105 157 165 231 385 471 785 1099 1155 1727 2355 3297 5181 5495 8635 12089 16485 25905 36267 60445 156749 181335 470247 783745 1097243 1724239 2351235 3291729 5172717 5486215 8621195 12069673 16458645 24609593 25863585 36209019 60348365 73828779 123047965 172267151 181045095 270705523 369143895 516801453 812116569 861335755 1353527615 1894938661 2584007265 4060582845 5684815983 9474693305 28424079915