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26668960 = 255237247
BaseRepresentation
bin110010110111…
…0111110100000
31212011220221021
41211232332200
523311401320
62351335224
7442453033
oct145567640
955156837
1026668960
111406586a
128b21514
1356a9a66
14378301a
15251bdaa
hex196efa0

26668960 has 48 divisors (see below), whose sum is σ = 65753856. Its totient is φ = 10202368.

The previous prime is 26668927. The next prime is 26668963. The reversal of 26668960 is 6986662.

It is a happy number.

It is a super-2 number, since 2×266689602 = 1422466854963200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26668963) 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, 57 + ... + 7303.

It is an arithmetic number, because the mean of its divisors is an integer number (1369872).

Almost surely, 226668960 is an apocalyptic number.

26668960 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 26668960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32876928).

26668960 is an abundant number, since it is smaller than the sum of its proper divisors (39084896).

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

26668960 is a wasteful number, since it uses less digits than its factorization.

26668960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285 (or 7277 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 26668960 is about 5164.1998412145. The cubic root of 26668960 is about 298.7688806540.

The spelling of 26668960 in words is "twenty-six million, six hundred sixty-eight thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 23 32 40 46 80 92 115 160 184 230 368 460 736 920 1840 3680 7247 14494 28988 36235 57976 72470 115952 144940 166681 231904 289880 333362 579760 666724 833405 1159520 1333448 1666810 2666896 3333620 5333792 6667240 13334480 26668960