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BaseRepresentation
bin101010100000…
…0101000111101
31112221012002020
41111000220331
521201103421
62113350353
7360263304
oct125005075
945835066
1022284861
1111640a45
1275683b9
134803411
142d6143b
151e52dc6
hex1540a3d

22284861 has 8 divisors (see below), whose sum is σ = 31005120. Its totient is φ = 14210592.

The previous prime is 22284859. The next prime is 22284863. The reversal of 22284861 is 16848222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22284859) and next prime (22284863).

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

It is not a de Polignac number, because 22284861 - 21 = 22284859 is a prime.

It is a super-3 number, since 3×222848613 (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22284863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161416 + ... + 161553.

It is an arithmetic number, because the mean of its divisors is an integer number (3875640).

Almost surely, 222284861 is an apocalyptic number.

It is an amenable number.

22284861 is a deficient number, since it is larger than the sum of its proper divisors (8720259).

22284861 is a wasteful number, since it uses less digits than its factorization.

22284861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322995.

The product of its digits is 12288, while the sum is 33.

The square root of 22284861 is about 4720.6843783502. The cubic root of 22284861 is about 281.4081319137.

The spelling of 22284861 in words is "twenty-two million, two hundred eighty-four thousand, eight hundred sixty-one".

Divisors: 1 3 23 69 322969 968907 7428287 22284861