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102968490 = 235171011999
BaseRepresentation
bin1100010001100…
…10110010101010
321011202100012210
412020302302222
5202324442430
614114545550
72360134452
oct610626252
9234670183
10102968490
1153139829
122a5982b6
1318442a01
14d964d62
15908e2b0
hex6232caa

102968490 has 64 divisors (see below), whose sum is σ = 264384000. Its totient is φ = 25574400.

The previous prime is 102968479. The next prime is 102968491. The reversal of 102968490 is 94869201.

102968490 = T87 + T88 + ... + T851.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102968491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50511 + ... + 52509.

It is an arithmetic number, because the mean of its divisors is an integer number (4131000).

Almost surely, 2102968490 is an apocalyptic number.

102968490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102968490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132192000).

102968490 is an abundant number, since it is smaller than the sum of its proper divisors (161415510).

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

102968490 is a wasteful number, since it uses less digits than its factorization.

102968490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 102968490 is about 10147.3390600689. The cubic root of 102968490 is about 468.7070090350.

The spelling of 102968490 in words is "one hundred two million, nine hundred sixty-eight thousand, four hundred ninety".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 101 102 170 202 255 303 505 510 606 1010 1515 1717 1999 3030 3434 3998 5151 5997 8585 9995 10302 11994 17170 19990 25755 29985 33983 51510 59970 67966 101949 169915 201899 203898 339830 403798 509745 605697 1009495 1019490 1211394 2018990 3028485 3432283 6056970 6864566 10296849 17161415 20593698 34322830 51484245 102968490