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22039031 = 719165707
BaseRepresentation
bin101010000010…
…0100111110111
31112110200212102
41110010213313
521120222111
62104212315
7355220510
oct124044767
945420772
1022039031
1111493283
12746a09b
134748561
142cd9a07
151e0513b
hex15049f7

22039031 has 8 divisors (see below), whose sum is σ = 26513280. Its totient is φ = 17896248.

The previous prime is 22039019. The next prime is 22039049. The reversal of 22039031 is 13093022.

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 22039031 - 26 = 22038967 is a prime.

It is a super-2 number, since 2×220390312 = 971437774837922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22038994 and 22039012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22039081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82721 + ... + 82986.

It is an arithmetic number, because the mean of its divisors is an integer number (3314160).

Almost surely, 222039031 is an apocalyptic number.

22039031 is a deficient number, since it is larger than the sum of its proper divisors (4474249).

22039031 is a wasteful number, since it uses less digits than its factorization.

22039031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165733.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 22039031 is about 4694.5746346181. The cubic root of 22039031 is about 280.3695418289.

The spelling of 22039031 in words is "twenty-two million, thirty-nine thousand, thirty-one".

Divisors: 1 7 19 133 165707 1159949 3148433 22039031