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87358221407 = 3724113911197
BaseRepresentation
bin101000101011011110…
…1001010110001011111
322100111010220110011202
41101112331022301133
52412402201041112
6104044245510115
76211550426102
oct1212675126137
9270433813152
1087358221407
11340594907a6
1214b2011233b
138312712092
14432a102739
1524144976c2
hex1456f4ac5f

87358221407 has 24 divisors (see below), whose sum is σ = 92642845680. Its totient is φ = 82320157440.

The previous prime is 87358221403. The next prime is 87358221463. The reversal of 87358221407 is 70412285378.

It is not a de Polignac number, because 87358221407 - 22 = 87358221403 is a prime.

It is a super-3 number, since 3×873582214073 (a number of 34 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87358221403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7796333 + ... + 7807529.

It is an arithmetic number, because the mean of its divisors is an integer number (3860118570).

Almost surely, 287358221407 is an apocalyptic number.

87358221407 is a deficient number, since it is larger than the sum of its proper divisors (5284624273).

87358221407 is a wasteful number, since it uses less digits than its factorization.

87358221407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11451 (or 11414 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 87358221407 in words is "eighty-seven billion, three hundred fifty-eight million, two hundred twenty-one thousand, four hundred seven".

Divisors: 1 37 41 139 1369 1517 5143 5699 11197 56129 190291 210863 414289 459077 1556383 7801931 15328693 16985849 57586171 63811703 628476413 2130688327 2361033011 87358221407