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22810057 = 163139939
BaseRepresentation
bin101011100000…
…0110111001001
31120220212111221
41113000313021
521314410212
62132522041
7364611424
oct127006711
946825457
1022810057
111196a596
127780321
13495849a
14305a9bb
152008807
hex15c0dc9

22810057 has 4 divisors (see below), whose sum is σ = 22950160. Its totient is φ = 22669956.

The previous prime is 22810033. The next prime is 22810061. The reversal of 22810057 is 75001822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22810057 - 215 = 22777289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22810097) 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, 69807 + ... + 70132.

It is an arithmetic number, because the mean of its divisors is an integer number (5737540).

Almost surely, 222810057 is an apocalyptic number.

It is an amenable number.

22810057 is a deficient number, since it is larger than the sum of its proper divisors (140103).

22810057 is a wasteful number, since it uses less digits than its factorization.

22810057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140102.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 22810057 is about 4775.9875418598. The cubic root of 22810057 is about 283.6016741135.

Adding to 22810057 its reverse (75001822), we get a palindrome (97811879).

The spelling of 22810057 in words is "twenty-two million, eight hundred ten thousand, fifty-seven".

Divisors: 1 163 139939 22810057