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102804972 = 22319450899
BaseRepresentation
bin1100010000010…
…10110111101100
321011110000220120
412020022313230
5202304224342
614111244540
72355553644
oct610126754
9234400816
10102804972
1153037996
122a519750
13183b645a
14d921524
15905aaec
hex620adec

102804972 has 24 divisors (see below), whose sum is σ = 252504000. Its totient is φ = 32464656.

The previous prime is 102804943. The next prime is 102804973. The reversal of 102804972 is 279408201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (102804973) 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, 225222 + ... + 225677.

It is an arithmetic number, because the mean of its divisors is an integer number (10521000).

Almost surely, 2102804972 is an apocalyptic number.

102804972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102804972 is an abundant number, since it is smaller than the sum of its proper divisors (149699028).

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

102804972 is a wasteful number, since it uses less digits than its factorization.

102804972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450925 (or 450923 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 102804972 is about 10139.2786725684. The cubic root of 102804972 is about 468.4587692136.

The spelling of 102804972 in words is "one hundred two million, eight hundred four thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 450899 901798 1352697 1803596 2705394 5410788 8567081 17134162 25701243 34268324 51402486 102804972