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23124530 = 251113103157
BaseRepresentation
bin101100000110…
…1101000110010
31121111211220002
41120031220302
521404441110
62143350002
7400361312
oct130155062
947454802
1023124530
1112064890
1278b2302
134a38670
1430dd442
15206baa5
hex160da32

23124530 has 64 divisors (see below), whose sum is σ = 49690368. Its totient is φ = 7637760.

The previous prime is 23124529. The next prime is 23124553. The reversal of 23124530 is 3542132.

It is a happy number.

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 in 31 ways as a sum of consecutive naturals, for example, 147212 + ... + 147368.

It is an arithmetic number, because the mean of its divisors is an integer number (776412).

Almost surely, 223124530 is an apocalyptic number.

23124530 is an abundant number, since it is smaller than the sum of its proper divisors (26565838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23124530 is a wasteful number, since it uses less digits than its factorization.

23124530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23124530 is about 4808.7971468965. The cubic root of 23124530 is about 284.8990306123.

Adding to 23124530 its reverse (3542132), we get a palindrome (26666662).

The spelling of 23124530 in words is "twenty-three million, one hundred twenty-four thousand, five hundred thirty".

Divisors: 1 2 5 10 11 13 22 26 55 65 103 110 130 143 157 206 286 314 515 715 785 1030 1133 1339 1430 1570 1727 2041 2266 2678 3454 4082 5665 6695 8635 10205 11330 13390 14729 16171 17270 20410 22451 29458 32342 44902 73645 80855 112255 147290 161710 177881 210223 224510 355762 420446 889405 1051115 1778810 2102230 2312453 4624906 11562265 23124530