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87267282388 = 221113211735783
BaseRepresentation
bin101000101000110001…
…0010000110111010100
322100020210210021021221
41101101202100313110
52412210411014023
6104031240420124
76206364442546
oct1212142206724
9270223707257
1087267282388
1134012118990
1214ab5777644
1382c9921900
14431bdcd696
15240b4d285d
hex1451890dd4

87267282388 has 36 divisors (see below), whose sum is σ = 180402471648. Its totient is φ = 36615639840.

The previous prime is 87267282371. The next prime is 87267282409. The reversal of 87267282388 is 88328276278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5860456 + ... + 5875327.

It is an arithmetic number, because the mean of its divisors is an integer number (5011179768).

Almost surely, 287267282388 is an apocalyptic number.

It is an amenable number.

87267282388 is an abundant number, since it is smaller than the sum of its proper divisors (93135189260).

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

87267282388 is a wasteful number, since it uses less digits than its factorization.

87267282388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11735824 (or 11735809 counting only the distinct ones).

The product of its digits is 28901376, while the sum is 61.

The spelling of 87267282388 in words is "eighty-seven billion, two hundred sixty-seven million, two hundred eighty-two thousand, three hundred eighty-eight".

Divisors: 1 2 4 11 13 22 26 44 52 143 169 286 338 572 676 1859 3718 7436 11735783 23471566 46943132 129093613 152565179 258187226 305130358 516374452 610260716 1678216969 1983347327 3356433938 3966694654 6712867876 7933389308 21816820597 43633641194 87267282388