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22423930 = 257131583
BaseRepresentation
bin101010110001…
…0100101111010
31120012020211221
41111202211322
521220031210
62120342254
7361412614
oct125424572
946166757
1022423930
1111726481
12761498a
1348517c9
142d99db4
151e7e1da
hex156297a

22423930 has 16 divisors (see below), whose sum is σ = 40932864. Its totient is φ = 8842960.

The previous prime is 22423927. The next prime is 22423949. The reversal of 22423930 is 3932422.

It is a junction number, because it is equal to n+sod(n) for n = 22423895 and 22423904.

It is an unprimeable number.

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, 15082 + ... + 16501.

It is an arithmetic number, because the mean of its divisors is an integer number (2558304).

Almost surely, 222423930 is an apocalyptic number.

22423930 is a deficient number, since it is larger than the sum of its proper divisors (18508934).

22423930 is a wasteful number, since it uses less digits than its factorization.

22423930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31661.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 22423930 is about 4735.3912193186. The cubic root of 22423930 is about 281.9922956164.

The spelling of 22423930 in words is "twenty-two million, four hundred twenty-three thousand, nine hundred thirty".

Divisors: 1 2 5 10 71 142 355 710 31583 63166 157915 315830 2242393 4484786 11211965 22423930