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22805038 = 211402519
BaseRepresentation
bin101011011111…
…1101000101110
31120220121122001
41112333220232
521314230123
62132442514
7364560664
oct126775056
946817561
1022805038
1111966843
12777943a
134956109
143058c34
1520070ad
hex15bfa2e

22805038 has 4 divisors (see below), whose sum is σ = 34207560. Its totient is φ = 11402518.

The previous prime is 22805023. The next prime is 22805039. The reversal of 22805038 is 83050822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83050822 = 241525411.

It is a junction number, because it is equal to n+sod(n) for n = 22804997 and 22805015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22805039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5701258 + ... + 5701261.

It is an arithmetic number, because the mean of its divisors is an integer number (8551890).

Almost surely, 222805038 is an apocalyptic number.

22805038 is a deficient number, since it is larger than the sum of its proper divisors (11402522).

22805038 is a wasteful number, since it uses less digits than its factorization.

22805038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11402521.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22805038 is about 4775.4620718837. The cubic root of 22805038 is about 283.5808718680.

The spelling of 22805038 in words is "twenty-two million, eight hundred five thousand, thirty-eight".

Divisors: 1 2 11402519 22805038