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102279 = 3103331
BaseRepresentation
bin11000111110000111
312012022010
4120332013
511233104
62105303
7604122
oct307607
9165263
10102279
116a931
124b233
1337728
14293b9
1520489
hex18f87

102279 has 8 divisors (see below), whose sum is σ = 138112. Its totient is φ = 67320.

The previous prime is 102259. The next prime is 102293. The reversal of 102279 is 972201.

It is a happy number.

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

It is not a de Polignac number, because 102279 - 28 = 102023 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144 + ... + 474.

It is an arithmetic number, because the mean of its divisors is an integer number (17264).

2102279 is an apocalyptic number.

102279 is a deficient number, since it is larger than the sum of its proper divisors (35833).

102279 is a wasteful number, since it uses less digits than its factorization.

102279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 102279 is about 319.8108816160. The cubic root of 102279 is about 46.7658491450.

The spelling of 102279 in words is "one hundred two thousand, two hundred seventy-nine".

Divisors: 1 3 103 309 331 993 34093 102279