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102072287 = 1091396737
BaseRepresentation
bin1100001010101…
…11111111011111
321010001210212002
412011113333133
5202112303122
614043432515
72346412562
oct605277737
9233053762
10102072287
1152687469
122a22573b
13181bab05
14d7b04d9
158e63992
hex6157fdf

102072287 has 8 divisors (see below), whose sum is σ = 103765200. Its totient is φ = 100393344.

The previous prime is 102072277. The next prime is 102072293. The reversal of 102072287 is 782270201.

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

It is a cyclic number.

It is not a de Polignac number, because 102072287 - 214 = 102055903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102072277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11783 + ... + 18519.

It is an arithmetic number, because the mean of its divisors is an integer number (12970650).

Almost surely, 2102072287 is an apocalyptic number.

102072287 is a deficient number, since it is larger than the sum of its proper divisors (1692913).

102072287 is a wasteful number, since it uses less digits than its factorization.

102072287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6985.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 102072287 is about 10103.0830442989. The cubic root of 102072287 is about 467.3432221398.

The spelling of 102072287 in words is "one hundred two million, seventy-two thousand, two hundred eighty-seven".

Divisors: 1 109 139 6737 15151 734333 936443 102072287