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102387284 = 22291794931
BaseRepresentation
bin1100001101001…
…00111001010100
321010122210221122
412012210321110
5202202343114
614054303112
72352164126
oct606447124
9233583848
10102387284
115288209a
122a357a98
131829b2bc
14d853216
158ec6e8e
hex61a4e54

102387284 has 24 divisors (see below), whose sum is σ = 186429600. Its totient is φ = 49142240.

The previous prime is 102387227. The next prime is 102387289. The reversal of 102387284 is 482783201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102387289) 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, 18299 + ... + 23229.

It is an arithmetic number, because the mean of its divisors is an integer number (7767900).

Almost surely, 2102387284 is an apocalyptic number.

It is an amenable number.

102387284 is a deficient number, since it is larger than the sum of its proper divisors (84042316).

102387284 is a wasteful number, since it uses less digits than its factorization.

102387284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143 (or 5141 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 102387284 is about 10118.6601879893. The cubic root of 102387284 is about 467.8234717866.

The spelling of 102387284 in words is "one hundred two million, three hundred eighty-seven thousand, two hundred eighty-four".

Divisors: 1 2 4 29 58 116 179 358 716 4931 5191 9862 10382 19724 20764 142999 285998 571996 882649 1765298 3530596 25596821 51193642 102387284