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22928113 = 131763701
BaseRepresentation
bin101011101110…
…1101011110001
31121010212110101
41113131223301
521332144423
62135232401
7365612545
oct127355361
947125411
1022928113
1111a4025a
127818701
13499a140
14308ba25
15202d7ad
hex15ddaf1

22928113 has 4 divisors (see below), whose sum is σ = 24691828. Its totient is φ = 21164400.

The previous prime is 22928093. The next prime is 22928119. The reversal of 22928113 is 31182922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31182922 = 215591461.

It can be written as a sum of positive squares in 2 ways, for example, as 9437184 + 13490929 = 3072^2 + 3673^2 .

It is a cyclic number.

It is not a de Polignac number, because 22928113 - 217 = 22797041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22928119) 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, 881838 + ... + 881863.

It is an arithmetic number, because the mean of its divisors is an integer number (6172957).

Almost surely, 222928113 is an apocalyptic number.

It is an amenable number.

22928113 is a deficient number, since it is larger than the sum of its proper divisors (1763715).

22928113 is a wasteful number, since it uses less digits than its factorization.

22928113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763714.

The product of its digits is 1728, while the sum is 28.

The square root of 22928113 is about 4788.3309200597. The cubic root of 22928113 is about 284.0901031634.

The spelling of 22928113 in words is "twenty-two million, nine hundred twenty-eight thousand, one hundred thirteen".

Divisors: 1 13 1763701 22928113