Search a number
-
+
26728250 = 2531719331
BaseRepresentation
bin110010111110…
…1011100111010
31212021221021012
41211331130322
523320301000
62352513522
7443120633
oct145753472
955257235
1026728250
11140a636a
128b4b8a2
1356caa43
14379a88a
15252e735
hex197d73a

26728250 has 64 divisors (see below), whose sum is σ = 55935360. Its totient is φ = 9504000.

The previous prime is 26728249. The next prime is 26728291. The reversal of 26728250 is 5282762.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 80585 + ... + 80915.

It is an arithmetic number, because the mean of its divisors is an integer number (873990).

Almost surely, 226728250 is an apocalyptic number.

26728250 is an abundant number, since it is smaller than the sum of its proper divisors (29207110).

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

26728250 is a wasteful number, since it uses less digits than its factorization.

26728250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 26728250 is about 5169.9371369486. The cubic root of 26728250 is about 298.9901228267.

The spelling of 26728250 in words is "twenty-six million, seven hundred twenty-eight thousand, two hundred fifty".

Divisors: 1 2 5 10 17 19 25 34 38 50 85 95 125 170 190 250 323 331 425 475 646 662 850 950 1615 1655 2125 2375 3230 3310 4250 4750 5627 6289 8075 8275 11254 12578 16150 16550 28135 31445 40375 41375 56270 62890 80750 82750 106913 140675 157225 213826 281350 314450 534565 703375 786125 1069130 1406750 1572250 2672825 5345650 13364125 26728250