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28992136470 = 23511518916931
BaseRepresentation
bin11011000000000100…
…001110010100010110
32202211111211010112020
4123000010032110112
5433333441331340
621152510034010
72044311044133
oct330004162426
982744733466
1028992136470
111132833a270
1257514a8906
13297063394b
14159065158a
15b4a3e29d0
hex6c010e516

28992136470 has 64 divisors (see below), whose sum is σ = 75925797120. Its totient is φ = 7026627200.

The previous prime is 28992136463. The next prime is 28992136477. The reversal of 28992136470 is 7463129982.

It is an interprime number because it is at equal distance from previous prime (28992136463) and next prime (28992136477).

It is a super-3 number, since 3×289921364703 (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 (28992136477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1703905 + ... + 1720835.

It is an arithmetic number, because the mean of its divisors is an integer number (1186340580).

Almost surely, 228992136470 is an apocalyptic number.

28992136470 is an abundant number, since it is smaller than the sum of its proper divisors (46933660650).

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

28992136470 is a wasteful number, since it uses less digits than its factorization.

28992136470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22141.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 28992136470 in words is "twenty-eight billion, nine hundred ninety-two million, one hundred thirty-six thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 5189 10378 15567 16931 25945 31134 33862 50793 51890 57079 77835 84655 101586 114158 155670 169310 171237 186241 253965 285395 342474 372482 507930 558723 570790 856185 931205 1117446 1712370 1862410 2793615 5587230 87854959 175709918 263564877 439274795 527129754 878549590 966404549 1317824385 1932809098 2635648770 2899213647 4832022745 5798427294 9664045490 14496068235 28992136470