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10307997 = 3271311249
BaseRepresentation
bin100111010100…
…100110011101
3201101200220200
4213110212131
510114323442
61004534113
7153421320
oct47244635
921350820
1010307997
115900607
123551339
13219bb0b
1415247b7
15d8934c
hex9d499d

10307997 has 24 divisors (see below), whose sum is σ = 17160000. Its totient is φ = 5840640.

The previous prime is 10307989. The next prime is 10308007. The reversal of 10307997 is 79970301.

It is not a de Polignac number, because 10307997 - 23 = 10307989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10307987) 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 23 ways as a sum of consecutive naturals, for example, 7629 + ... + 8877.

It is an arithmetic number, because the mean of its divisors is an integer number (715000).

Almost surely, 210307997 is an apocalyptic number.

It is an amenable number.

10307997 is a deficient number, since it is larger than the sum of its proper divisors (6852003).

10307997 is a wasteful number, since it uses less digits than its factorization.

10307997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393 (or 1390 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 10307997 is about 3210.6069519641. The cubic root of 10307997 is about 217.6330062412.

The spelling of 10307997 in words is "ten million, three hundred seven thousand, nine hundred ninety-seven".

Divisors: 1 3 7 9 21 63 131 393 917 1179 1249 2751 3747 8253 8743 11241 26229 78687 163619 490857 1145333 1472571 3435999 10307997