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10428905 = 517122693
BaseRepresentation
bin100111110010…
…000111101001
3201121211202202
4213302013221
510132211110
61011305545
7154433654
oct47620751
921554682
1010428905
115983433
1235ab2b5
132211b66
14155689b
15db00a5
hex9f21e9

10428905 has 8 divisors (see below), whose sum is σ = 13250952. Its totient is φ = 7852288.

The previous prime is 10428881. The next prime is 10428911. The reversal of 10428905 is 50982401.

It can be written as a sum of positive squares in 4 ways, for example, as 137641 + 10291264 = 371^2 + 3208^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10428905 - 26 = 10428841 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is an unprimeable number.

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, 61262 + ... + 61431.

It is an arithmetic number, because the mean of its divisors is an integer number (1656369).

Almost surely, 210428905 is an apocalyptic number.

It is an amenable number.

10428905 is a deficient number, since it is larger than the sum of its proper divisors (2822047).

10428905 is a wasteful number, since it uses less digits than its factorization.

10428905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122715.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 10428905 is about 3229.3815197341. The cubic root of 10428905 is about 218.4806120617.

It can be divided in two parts, 10428 and 905, that multiplied together give a triangular number (9437340 = T4344).

The spelling of 10428905 in words is "ten million, four hundred twenty-eight thousand, nine hundred five".

Divisors: 1 5 17 85 122693 613465 2085781 10428905