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26040880 = 2451631997
BaseRepresentation
bin110001101010…
…1101000110000
31211000000101001
41203111220300
523131302010
62330051344
7434225635
oct143255060
954000331
1026040880
1113776998
128879b54
135519c08
14365c18c
152445c3a
hex18d5a30

26040880 has 40 divisors (see below), whose sum is σ = 60946992. Its totient is φ = 10347264.

The previous prime is 26040871. The next prime is 26040881. The reversal of 26040880 is 8804062.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (26040881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12042 + ... + 14038.

Almost surely, 226040880 is an apocalyptic number.

26040880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26040880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30473496).

26040880 is an abundant number, since it is smaller than the sum of its proper divisors (34906112).

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

26040880 is a wasteful number, since it uses less digits than its factorization.

26040880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 26040880 is about 5103.0265529390. The cubic root of 26040880 is about 296.4047907154.

The spelling of 26040880 in words is "twenty-six million, forty thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 163 326 652 815 1304 1630 1997 2608 3260 3994 6520 7988 9985 13040 15976 19970 31952 39940 79880 159760 325511 651022 1302044 1627555 2604088 3255110 5208176 6510220 13020440 26040880