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91007514 = 23213229917
BaseRepresentation
bin1010110110010…
…10101000011010
320100020122211200
411123022220122
5141244220024
613010335030
72153360013
oct533125032
9210218750
1091007514
114740a324
122658a476
1315b15700
14c13000a
157eca2c9
hex56caa1a

91007514 has 36 divisors (see below), whose sum is σ = 213524766. Its totient is φ = 28001376.

The previous prime is 91007513. The next prime is 91007533. The reversal of 91007514 is 41570019.

It can be written as a sum of positive squares in 3 ways, for example, as 66830625 + 24176889 = 8175^2 + 4917^2 .

It is not an unprimeable number, because it can be changed into a prime (91007513) 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 17 ways as a sum of consecutive naturals, for example, 11917 + ... + 18000.

Almost surely, 291007514 is an apocalyptic number.

91007514 is an abundant number, since it is smaller than the sum of its proper divisors (122517252).

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

91007514 is a wasteful number, since it uses less digits than its factorization.

91007514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29951 (or 29935 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 91007514 is about 9539.7858466530. The cubic root of 91007514 is about 449.8065242352.

The spelling of 91007514 in words is "ninety-one million, seven thousand, five hundred fourteen".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 169 234 338 507 1014 1521 3042 29917 59834 89751 179502 269253 388921 538506 777842 1166763 2333526 3500289 5055973 7000578 10111946 15167919 30335838 45503757 91007514