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100587972 = 22371118061
BaseRepresentation
bin1011111111011…
…01100111000100
321000021101202110
411333231213010
5201222303342
613551541020
72330661252
oct577554704
9230241673
10100587972
1151863261
122982a770
1317abb314
14d5055d2
158c6dc9c
hex5fed9c4

100587972 has 24 divisors (see below), whose sum is σ = 238012992. Its totient is φ = 33056800.

The previous prime is 100587959. The next prime is 100587989. The reversal of 100587972 is 279785001.

It is a super-2 number, since 2×1005879722 = 20235880222145568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100587972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58179 + ... + 59882.

It is an arithmetic number, because the mean of its divisors is an integer number (9917208).

Almost surely, 2100587972 is an apocalyptic number.

100587972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100587972 is an abundant number, since it is smaller than the sum of its proper divisors (137425020).

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

100587972 is a wasteful number, since it uses less digits than its factorization.

100587972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118139 (or 118137 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 100587972 is about 10029.3555126937. The cubic root of 100587972 is about 465.0668143095.

The spelling of 100587972 in words is "one hundred million, five hundred eighty-seven thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 12 71 142 213 284 426 852 118061 236122 354183 472244 708366 1416732 8382331 16764662 25146993 33529324 50293986 100587972