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26745140 = 22543137227
BaseRepresentation
bin110011000000…
…1100100110100
31212022210102202
41212001210310
523321321030
62353124032
7443221112
oct146014464
955283382
1026745140
1114108024
128b59618
135705636
1437a2ab2
152534745
hex1981934

26745140 has 48 divisors (see below), whose sum is σ = 58145472. Its totient is φ = 10327296.

The previous prime is 26745137. The next prime is 26745143. The reversal of 26745140 is 4154762.

It is an interprime number because it is at equal distance from previous prime (26745137) and next prime (26745143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26745143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117707 + ... + 117933.

It is an arithmetic number, because the mean of its divisors is an integer number (1211364).

Almost surely, 226745140 is an apocalyptic number.

26745140 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 26745140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29072736).

26745140 is an abundant number, since it is smaller than the sum of its proper divisors (31400332).

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

26745140 is a wasteful number, since it uses less digits than its factorization.

26745140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 26745140 is about 5171.5703611186. The cubic root of 26745140 is about 299.0530884135.

The spelling of 26745140 in words is "twenty-six million, seven hundred forty-five thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 43 86 137 172 215 227 274 430 454 548 685 860 908 1135 1370 2270 2740 4540 5891 9761 11782 19522 23564 29455 31099 39044 48805 58910 62198 97610 117820 124396 155495 195220 310990 621980 1337257 2674514 5349028 6686285 13372570 26745140