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10805538 = 232378301
BaseRepresentation
bin101001001110…
…000100100010
3202022222102010
4221032010202
510231234123
61023333350
7160563012
oct51160442
922288363
1010805538
1161103a7
123751256
132314413
141613c42
15e36993
hexa4e122

10805538 has 16 divisors (see below), whose sum is σ = 22550976. Its totient is φ = 3445200.

The previous prime is 10805507. The next prime is 10805539. The reversal of 10805538 is 83550801.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (10805539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39013 + ... + 39288.

It is an arithmetic number, because the mean of its divisors is an integer number (1409436).

Almost surely, 210805538 is an apocalyptic number.

10805538 is an abundant number, since it is smaller than the sum of its proper divisors (11745438).

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

10805538 is a wasteful number, since it uses less digits than its factorization.

10805538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78329.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 10805538 is about 3287.1778169123. The cubic root of 10805538 is about 221.0796652521.

The spelling of 10805538 in words is "ten million, eight hundred five thousand, five hundred thirty-eight".

Divisors: 1 2 3 6 23 46 69 138 78301 156602 234903 469806 1800923 3601846 5402769 10805538