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26806494 = 231113157199
BaseRepresentation
bin110011001000…
…0100011011110
31212102220121010
41212100203132
523330301434
62354320050
7443565021
oct146204336
955386533
1026806494
111414a130
128b89026
135727540
1437bb1b8
1525479e9
hex19908de

26806494 has 64 divisors (see below), whose sum is σ = 63705600. Its totient is φ = 7413120.

The previous prime is 26806489. The next prime is 26806513. The reversal of 26806494 is 49460862.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134607 + ... + 134805.

It is an arithmetic number, because the mean of its divisors is an integer number (995400).

Almost surely, 226806494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26806494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31852800).

26806494 is an abundant number, since it is smaller than the sum of its proper divisors (36899106).

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

26806494 is a wasteful number, since it uses less digits than its factorization.

26806494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 26806494 is about 5177.4988169965. The cubic root of 26806494 is about 299.2815921181.

The spelling of 26806494 in words is "twenty-six million, eight hundred six thousand, four hundred ninety-four".

Divisors: 1 2 3 6 11 13 22 26 33 39 66 78 143 157 199 286 314 398 429 471 597 858 942 1194 1727 2041 2189 2587 3454 4082 4378 5174 5181 6123 6567 7761 10362 12246 13134 15522 22451 28457 31243 44902 56914 62486 67353 85371 93729 134706 170742 187458 343673 406159 687346 812318 1031019 1218477 2062038 2436954 4467749 8935498 13403247 26806494