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23280260 = 22511310301
BaseRepresentation
bin101100011001…
…1101010000100
31121210202111212
41120303222010
521424432020
62150550552
7401610323
oct130635204
947722455
1023280260
1112160893
127968458
134a91503
1431400ba
15209ccc5
hex1633a84

23280260 has 24 divisors (see below), whose sum is σ = 49325976. Its totient is φ = 9228800.

The previous prime is 23280227. The next prime is 23280269. The reversal of 23280260 is 6208232.

It can be written as a sum of positive squares in 4 ways, for example, as 1898884 + 21381376 = 1378^2 + 4624^2 .

It is not an unprimeable number, because it can be changed into a prime (23280269) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2891 + ... + 7410.

It is an arithmetic number, because the mean of its divisors is an integer number (2055249).

Almost surely, 223280260 is an apocalyptic number.

23280260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23280260 is an abundant number, since it is smaller than the sum of its proper divisors (26045716).

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

23280260 is a wasteful number, since it uses less digits than its factorization.

23280260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10423 (or 10421 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 23280260 is about 4824.9621760175. The cubic root of 23280260 is about 285.5371423363.

Adding to 23280260 its reverse (6208232), we get a palindrome (29488492).

The spelling of 23280260 in words is "twenty-three million, two hundred eighty thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 113 226 452 565 1130 2260 10301 20602 41204 51505 103010 206020 1164013 2328026 4656052 5820065 11640130 23280260