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102328780 = 22517300967
BaseRepresentation
bin1100001100101…
…10100111001100
321010112211200211
412012112213030
5202144010110
614053132204
72351531431
oct606264714
9233484624
10102328780
1152842144
122a32a064
131827a798
14d839b88
158eb498a
hex61969cc

102328780 has 24 divisors (see below), whose sum is σ = 227531808. Its totient is φ = 38523648.

The previous prime is 102328757. The next prime is 102328783. The reversal of 102328780 is 87823201.

It is not an unprimeable number, because it can be changed into a prime (102328783) 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, 150144 + ... + 150823.

It is an arithmetic number, because the mean of its divisors is an integer number (9480492).

Almost surely, 2102328780 is an apocalyptic number.

102328780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102328780 is an abundant number, since it is smaller than the sum of its proper divisors (125203028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102328780 is a wasteful number, since it uses less digits than its factorization.

102328780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300993 (or 300991 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 102328780 is about 10115.7688783404. The cubic root of 102328780 is about 467.7343501758.

The spelling of 102328780 in words is "one hundred two million, three hundred twenty-eight thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 300967 601934 1203868 1504835 3009670 5116439 6019340 10232878 20465756 25582195 51164390 102328780