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22085308 = 227788761
BaseRepresentation
bin101010000111…
…1111010111100
31112120001100101
41110033322330
521123212213
62105210444
7355502440
oct124177274
945501311
1022085308
1111515023
127490a24
13476363b
142d0c820
151e13bdd
hex150febc

22085308 has 12 divisors (see below), whose sum is σ = 44170672. Its totient is φ = 9465120.

The previous prime is 22085303. The next prime is 22085309. The reversal of 22085308 is 80358022.

22085308 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 788761 = 22085308 / (2 + 2 + 0 + 8 + 5 + 3 + 0 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22085303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394353 + ... + 394408.

Almost surely, 222085308 is an apocalyptic number.

22085308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22085308 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22085308 is a wasteful number, since it uses less digits than its factorization.

22085308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788772 (or 788770 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22085308 is about 4699.5008245557. The cubic root of 22085308 is about 280.5656422621.

The spelling of 22085308 in words is "twenty-two million, eighty-five thousand, three hundred eight".

Divisors: 1 2 4 7 14 28 788761 1577522 3155044 5521327 11042654 22085308