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102942680 = 23521112197
BaseRepresentation
bin1100010001011…
…00011111011000
321011201000210212
412020230133120
5202323131210
614114230252
72356666301
oct610543730
9234630725
10102942680
11531213a5
122a585388
1318434039
14d9597a8
159086805
hex622c7d8

102942680 has 32 divisors (see below), whose sum is σ = 232737840. Its totient is φ = 40978560.

The previous prime is 102942649. The next prime is 102942689. The reversal of 102942680 is 86249201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102942689) 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, 2342 + ... + 14538.

Almost surely, 2102942680 is an apocalyptic number.

102942680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102942680 is an abundant number, since it is smaller than the sum of its proper divisors (129795160).

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

102942680 is a wasteful number, since it uses less digits than its factorization.

102942680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12419 (or 12415 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 102942680 is about 10146.0672183857. The cubic root of 102942680 is about 468.6678438535.

The spelling of 102942680 in words is "one hundred two million, nine hundred forty-two thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 211 422 844 1055 1688 2110 4220 8440 12197 24394 48788 60985 97576 121970 243940 487880 2573567 5147134 10294268 12867835 20588536 25735670 51471340 102942680