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22728247 is a prime number
BaseRepresentation
bin101011010110…
…0111000110111
31120202201021221
41112230320313
521304300442
62131051211
7364121053
oct126547067
946681257
1022728247
1111914083
127740b07
13492a189
143038c63
151ede467
hex15ace37

22728247 has 2 divisors, whose sum is σ = 22728248. Its totient is φ = 22728246.

The previous prime is 22728241. The next prime is 22728253. The reversal of 22728247 is 74282722.

It is a balanced prime because it is at equal distance from previous prime (22728241) and next prime (22728253).

It is a cyclic number.

It is not a de Polignac number, because 22728247 - 215 = 22695479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22728241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11364123 + 11364124.

It is an arithmetic number, because the mean of its divisors is an integer number (11364124).

Almost surely, 222728247 is an apocalyptic number.

22728247 is a deficient number, since it is larger than the sum of its proper divisors (1).

22728247 is an equidigital number, since it uses as much as digits as its factorization.

22728247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25088, while the sum is 34.

The square root of 22728247 is about 4767.4151277186. The cubic root of 22728247 is about 283.2622149839.

The spelling of 22728247 in words is "twenty-two million, seven hundred twenty-eight thousand, two hundred forty-seven".