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23240644 = 2271794637
BaseRepresentation
bin101100010100…
…1111111000100
31121201202011121
41120221333010
521422200034
62150043324
7401353660
oct130517704
947652147
1023240644
1112134049
127949544
134a7947b
14312d8a0
1520911b4
hex1629fc4

23240644 has 24 divisors (see below), whose sum is σ = 46751040. Its totient is φ = 9902496.

The previous prime is 23240641. The next prime is 23240663. The reversal of 23240644 is 44604232.

It is not an unprimeable number, because it can be changed into a prime (23240641) by changing a digit.

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, 2694 + ... + 7330.

It is an arithmetic number, because the mean of its divisors is an integer number (1947960).

Almost surely, 223240644 is an apocalyptic number.

It is an amenable number.

23240644 is an abundant number, since it is smaller than the sum of its proper divisors (23510396).

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

23240644 is a wasteful number, since it uses less digits than its factorization.

23240644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4827 (or 4825 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 23240644 is about 4820.8551108699. The cubic root of 23240644 is about 285.3750842672.

Adding to 23240644 its reverse (44604232), we get a palindrome (67844876).

The spelling of 23240644 in words is "twenty-three million, two hundred forty thousand, six hundred forty-four".

Divisors: 1 2 4 7 14 28 179 358 716 1253 2506 4637 5012 9274 18548 32459 64918 129836 830023 1660046 3320092 5810161 11620322 23240644