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22420234 = 211210117
BaseRepresentation
bin101010110000…
…1101100001010
31120012001210001
41111201230022
521214421414
62120313214
7361366054
oct125415412
946161701
1022420234
1111723721
12761280a
13484cc15
142d988d4
151e7d074
hex1561b0a

22420234 has 4 divisors (see below), whose sum is σ = 33630354. Its totient is φ = 11210116.

The previous prime is 22420213. The next prime is 22420241. The reversal of 22420234 is 43202422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22420225 + 9 = 4735^2 + 3^2 .

It is a super-2 number, since 2×224202342 = 1005333785229512, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5605057 + ... + 5605060.

Almost surely, 222420234 is an apocalyptic number.

22420234 is a deficient number, since it is larger than the sum of its proper divisors (11210120).

22420234 is a wasteful number, since it uses less digits than its factorization.

22420234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11210119.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22420234 is about 4735.0009503695. Note that the first 3 decimals coincide. The cubic root of 22420234 is about 281.9768017401.

Adding to 22420234 its reverse (43202422), we get a palindrome (65622656).

The spelling of 22420234 in words is "twenty-two million, four hundred twenty thousand, two hundred thirty-four".

Divisors: 1 2 11210117 22420234