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26015140 = 2254392963
BaseRepresentation
bin110001100111…
…1010110100100
31210221201001201
41203033112210
523124441030
62325332244
7434060614
oct143172644
953851051
1026015140
1113759618
128867084
13550b298
143652a44
15243d2ca
hex18cf5a4

26015140 has 24 divisors (see below), whose sum is σ = 54774720. Its totient is φ = 10378848.

The previous prime is 26015131. The next prime is 26015167. The reversal of 26015140 is 4151062.

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, 7299 + ... + 10261.

It is an arithmetic number, because the mean of its divisors is an integer number (2282280).

Almost surely, 226015140 is an apocalyptic number.

26015140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26015140 is an abundant number, since it is smaller than the sum of its proper divisors (28759580).

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

26015140 is a wasteful number, since it uses less digits than its factorization.

26015140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411 (or 3409 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 26015140 is about 5100.5038966753. The cubic root of 26015140 is about 296.3070984912.

It can be divided in two parts, 260 and 15140, that added together give a triangular number (15400 = T175).

The spelling of 26015140 in words is "twenty-six million, fifteen thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 439 878 1756 2195 2963 4390 5926 8780 11852 14815 29630 59260 1300757 2601514 5203028 6503785 13007570 26015140