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28122595 = 553106123
BaseRepresentation
bin110101101000…
…1110111100011
31221220202221121
41223101313203
524144410340
62442433111
7461016034
oct153216743
957822847
1028122595
1114968a16
129502797
135a985b7
143a40a8b
15270794a
hex1ad1de3

28122595 has 8 divisors (see below), whose sum is σ = 34384176. Its totient is φ = 22073376.

The previous prime is 28122571. The next prime is 28122599. The reversal of 28122595 is 59522182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28122595 - 27 = 28122467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28122595.

It is not an unprimeable number, because it can be changed into a prime (28122599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52797 + ... + 53326.

It is an arithmetic number, because the mean of its divisors is an integer number (4298022).

Almost surely, 228122595 is an apocalyptic number.

28122595 is a deficient number, since it is larger than the sum of its proper divisors (6261581).

28122595 is a wasteful number, since it uses less digits than its factorization.

28122595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106181.

The product of its digits is 14400, while the sum is 34.

The square root of 28122595 is about 5303.0741084771. The cubic root of 28122595 is about 304.1014312674.

The spelling of 28122595 in words is "twenty-eight million, one hundred twenty-two thousand, five hundred ninety-five".

Divisors: 1 5 53 265 106123 530615 5624519 28122595