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102668387 = 4111932099
BaseRepresentation
bin1100001111010…
…01100001100011
321011012002112212
412013221201203
5202240342022
614104312335
72354444513
oct607514143
9234162485
10102668387
1152a54308
122a4726ab
1318369233
14d8c7843
1590303e2
hex61e9863

102668387 has 8 divisors (see below), whose sum is σ = 105310800. Its totient is φ = 100032640.

The previous prime is 102668383. The next prime is 102668393. The reversal of 102668387 is 783866201.

It is a happy number.

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 102668387 - 22 = 102668383 is a prime.

It is a super-4 number, since 4×1026683874 (a number of 33 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102668383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47864 + ... + 49962.

It is an arithmetic number, because the mean of its divisors is an integer number (13163850).

Almost surely, 2102668387 is an apocalyptic number.

102668387 is a deficient number, since it is larger than the sum of its proper divisors (2642413).

102668387 is a wasteful number, since it uses less digits than its factorization.

102668387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 102668387 is about 10132.5409942423. The cubic root of 102668387 is about 468.2512150557.

The spelling of 102668387 in words is "one hundred two million, six hundred sixty-eight thousand, three hundred eighty-seven".

Divisors: 1 41 1193 2099 48913 86059 2504107 102668387