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26195380 = 2251309769
BaseRepresentation
bin110001111101…
…1010110110100
31211021212022021
41203323112310
523201223010
62333242524
7435441241
oct143732664
954255267
1026195380
1113871a82
128933444
135572333
14369c5c8
1524768da
hex18fb5b4

26195380 has 12 divisors (see below), whose sum is σ = 55010340. Its totient is φ = 10478144.

The previous prime is 26195369. The next prime is 26195383. The reversal of 26195380 is 8359162.

It can be written as a sum of positive squares in 2 ways, for example, as 13264164 + 12931216 = 3642^2 + 3596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26195383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654865 + ... + 654904.

It is an arithmetic number, because the mean of its divisors is an integer number (4584195).

Almost surely, 226195380 is an apocalyptic number.

26195380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26195380 is an abundant number, since it is smaller than the sum of its proper divisors (28814960).

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

26195380 is a wasteful number, since it uses less digits than its factorization.

26195380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309778 (or 1309776 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 26195380 is about 5118.1422410871. The cubic root of 26195380 is about 296.9898230631.

The spelling of 26195380 in words is "twenty-six million, one hundred ninety-five thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 1309769 2619538 5239076 6548845 13097690 26195380